Home / 67,545.90-101,165.76-54,172.40

Finding the Fourth Proportional to 67,545.90, 101,165.76 and 54,172.40

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Solution

The fourth proportional to 67,545.90, 101,165.76 and 54,172.40 is: 81,135.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,545.90 : 101,165.76 = 54,172.40 : x
  2. Step 2: Convert to fraction form
    67,545.90/101,165.76 = 54,172.40/x
  3. Step 3: Cross multiply
    67,545.90x = 101,165.76 × 54,172.40
  4. Step 4: Simplify right side
    67,545.90x = 5,480,391,511.20
  5. Step 5: Solve for x
    x = 5,480,391,511.20/67,545.90
  6. Step 6: Final answer
    x = 81,135.81

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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.