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Finding the Fourth Proportional to 71,526.78, 98,707.02 and 39,695.70

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Solution

The fourth proportional to 71,526.78, 98,707.02 and 39,695.70 is: 54,780.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,526.78 : 98,707.02 = 39,695.70 : x
  2. Step 2: Convert to fraction form
    71,526.78/98,707.02 = 39,695.70/x
  3. Step 3: Cross multiply
    71,526.78x = 98,707.02 × 39,695.70
  4. Step 4: Simplify right side
    71,526.78x = 3,918,244,253.81
  5. Step 5: Solve for x
    x = 3,918,244,253.81/71,526.78
  6. Step 6: Final answer
    x = 54,780.10

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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.