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Finding the Fourth Proportional to 56,691.38, 85,037.88 and 19,755.38

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Solution

The fourth proportional to 56,691.38, 85,037.88 and 19,755.38 is: 29,633.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,691.38 : 85,037.88 = 19,755.38 : x
  2. Step 2: Convert to fraction form
    56,691.38/85,037.88 = 19,755.38/x
  3. Step 3: Cross multiply
    56,691.38x = 85,037.88 × 19,755.38
  4. Step 4: Simplify right side
    56,691.38x = 1,679,955,208.61
  5. Step 5: Solve for x
    x = 1,679,955,208.61/56,691.38
  6. Step 6: Final answer
    x = 29,633.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.