Home / 72,617,887.85-100,209,767.76-39,577,428.14

Finding the Fourth Proportional to 72,617,887.85, 100,209,767.76 and 39,577,428.14

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Solution

The fourth proportional to 72,617,887.85, 100,209,767.76 and 39,577,428.14 is: 54,615,260.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,617,887.85 : 100,209,767.76 = 39,577,428.14 : x
  2. Step 2: Convert to fraction form
    72,617,887.85/100,209,767.76 = 39,577,428.14/x
  3. Step 3: Cross multiply
    72,617,887.85x = 100,209,767.76 × 39,577,428.14
  4. Step 4: Simplify right side
    72,617,887.85x = 3,966,044,882,447,489
  5. Step 5: Solve for x
    x = 3,966,044,882,447,489/72,617,887.85
  6. Step 6: Final answer
    x = 54,615,260.78

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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.