Home / 39,643,789,896.16-54,709,557,788.40-21,580,470,997.12

Finding the Fourth Proportional to 39,643,789,896.16, 54,709,557,788.40 and 21,580,470,997.12

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Solution

The fourth proportional to 39,643,789,896.16, 54,709,557,788.40 and 21,580,470,997.12 is: 29,781,663,867.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,643,789,896.16 : 54,709,557,788.40 = 21,580,470,997.12 : x
  2. Step 2: Convert to fraction form
    39,643,789,896.16/54,709,557,788.40 = 21,580,470,997.12/x
  3. Step 3: Cross multiply
    39,643,789,896.16x = 54,709,557,788.40 × 21,580,470,997.12
  4. Step 4: Simplify right side
    39,643,789,896.16x = 1,180,658,025,117,826,678,784
  5. Step 5: Solve for x
    x = 1,180,658,025,117,826,678,784/39,643,789,896.16
  6. Step 6: Final answer
    x = 29,781,663,867.41

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.