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Finding the Fourth Proportional to 83,130.40, 124,773.90 and 43,715.80

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Solution

The fourth proportional to 83,130.40, 124,773.90 and 43,715.80 is: 65,614.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,130.40 : 124,773.90 = 43,715.80 : x
  2. Step 2: Convert to fraction form
    83,130.40/124,773.90 = 43,715.80/x
  3. Step 3: Cross multiply
    83,130.40x = 124,773.90 × 43,715.80
  4. Step 4: Simplify right side
    83,130.40x = 5,454,590,857.62
  5. Step 5: Solve for x
    x = 5,454,590,857.62/83,130.40
  6. Step 6: Final answer
    x = 65,614.88

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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.