Home / 83,086.40-124,589.28-38,702.72

Finding the Fourth Proportional to 83,086.40, 124,589.28 and 38,702.72

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Solution

The fourth proportional to 83,086.40, 124,589.28 and 38,702.72 is: 58,035.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,086.40 : 124,589.28 = 38,702.72 : x
  2. Step 2: Convert to fraction form
    83,086.40/124,589.28 = 38,702.72/x
  3. Step 3: Cross multiply
    83,086.40x = 124,589.28 × 38,702.72
  4. Step 4: Simplify right side
    83,086.40x = 4,821,944,018.84
  5. Step 5: Solve for x
    x = 4,821,944,018.84/83,086.40
  6. Step 6: Final answer
    x = 58,035.30

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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.