Home / 39,993,042.40-55,190,123.76-21,657,908.32

Finding the Fourth Proportional to 39,993,042.40, 55,190,123.76 and 21,657,908.32

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Solution

The fourth proportional to 39,993,042.40, 55,190,123.76 and 21,657,908.32 is: 29,887,764.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,993,042.40 : 55,190,123.76 = 21,657,908.32 : x
  2. Step 2: Convert to fraction form
    39,993,042.40/55,190,123.76 = 21,657,908.32/x
  3. Step 3: Cross multiply
    39,993,042.40x = 55,190,123.76 × 21,657,908.32
  4. Step 4: Simplify right side
    39,993,042.40x = 1,195,302,640,563,533.75
  5. Step 5: Solve for x
    x = 1,195,302,640,563,533.75/39,993,042.40
  6. Step 6: Final answer
    x = 29,887,764.69

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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.