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Finding the Fourth Proportional to 71,597.90, 98,805.22 and 39,765.98

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Solution

The fourth proportional to 71,597.90, 98,805.22 and 39,765.98 is: 54,877.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,597.90 : 98,805.22 = 39,765.98 : x
  2. Step 2: Convert to fraction form
    71,597.90/98,805.22 = 39,765.98/x
  3. Step 3: Cross multiply
    71,597.90x = 98,805.22 × 39,765.98
  4. Step 4: Simplify right side
    71,597.90x = 3,929,086,402.42
  5. Step 5: Solve for x
    x = 3,929,086,402.42/71,597.90
  6. Step 6: Final answer
    x = 54,877.12

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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.