Home / 72,260,287.38-99,717,945.35-39,219,827.40

Finding the Fourth Proportional to 72,260,287.38, 99,717,945.35 and 39,219,827.40

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Solution

The fourth proportional to 72,260,287.38, 99,717,945.35 and 39,219,827.40 is: 54,122,682.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,260,287.38 : 99,717,945.35 = 39,219,827.40 : x
  2. Step 2: Convert to fraction form
    72,260,287.38/99,717,945.35 = 39,219,827.40/x
  3. Step 3: Cross multiply
    72,260,287.38x = 99,717,945.35 × 39,219,827.40
  4. Step 4: Simplify right side
    72,260,287.38x = 3,910,920,605,113,533.50
  5. Step 5: Solve for x
    x = 3,910,920,605,113,533.50/72,260,287.38
  6. Step 6: Final answer
    x = 54,122,682.69

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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.