Home / 82,142.80-123,214.20-29,545.45

Finding the Fourth Proportional to 82,142.80, 123,214.20 and 29,545.45

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Solution

The fourth proportional to 82,142.80, 123,214.20 and 29,545.45 is: 44,318.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,142.80 : 123,214.20 = 29,545.45 : x
  2. Step 2: Convert to fraction form
    82,142.80/123,214.20 = 29,545.45/x
  3. Step 3: Cross multiply
    82,142.80x = 123,214.20 × 29,545.45
  4. Step 4: Simplify right side
    82,142.80x = 3,640,418,985.39
  5. Step 5: Solve for x
    x = 3,640,418,985.39/82,142.80
  6. Step 6: Final answer
    x = 44,318.18

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1.5x scale

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.