Home / 83,905.28-125,935.68-42,381.44

Finding the Fourth Proportional to 83,905.28, 125,935.68 and 42,381.44

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Solution

The fourth proportional to 83,905.28, 125,935.68 and 42,381.44 is: 63,611.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,905.28 : 125,935.68 = 42,381.44 : x
  2. Step 2: Convert to fraction form
    83,905.28/125,935.68 = 42,381.44/x
  3. Step 3: Cross multiply
    83,905.28x = 125,935.68 × 42,381.44
  4. Step 4: Simplify right side
    83,905.28x = 5,337,335,465.78
  5. Step 5: Solve for x
    x = 5,337,335,465.78/83,905.28
  6. Step 6: Final answer
    x = 63,611.44

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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.