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Finding the Fourth Proportional to 61,545.40, 92,318.10 and 43,977.40

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Solution

The fourth proportional to 61,545.40, 92,318.10 and 43,977.40 is: 65,966.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,545.40 : 92,318.10 = 43,977.40 : x
  2. Step 2: Convert to fraction form
    61,545.40/92,318.10 = 43,977.40/x
  3. Step 3: Cross multiply
    61,545.40x = 92,318.10 × 43,977.40
  4. Step 4: Simplify right side
    61,545.40x = 4,059,910,010.94
  5. Step 5: Solve for x
    x = 4,059,910,010.94/61,545.40
  6. Step 6: Final answer
    x = 65,966.10

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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.