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Finding the Fourth Proportional to 61,781.70, 92,589.12 and 45,063.30

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Solution

The fourth proportional to 61,781.70, 92,589.12 and 45,063.30 is: 67,534.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,781.70 : 92,589.12 = 45,063.30 : x
  2. Step 2: Convert to fraction form
    61,781.70/92,589.12 = 45,063.30/x
  3. Step 3: Cross multiply
    61,781.70x = 92,589.12 × 45,063.30
  4. Step 4: Simplify right side
    61,781.70x = 4,172,371,291.30
  5. Step 5: Solve for x
    x = 4,172,371,291.30/61,781.70
  6. Step 6: Final answer
    x = 67,534.10

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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.