Home / 83,755.85-125,631.80-20,575.87

Finding the Fourth Proportional to 83,755.85, 125,631.80 and 20,575.87

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Solution

The fourth proportional to 83,755.85, 125,631.80 and 20,575.87 is: 30,863.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,755.85 : 125,631.80 = 20,575.87 : x
  2. Step 2: Convert to fraction form
    83,755.85/125,631.80 = 20,575.87/x
  3. Step 3: Cross multiply
    83,755.85x = 125,631.80 × 20,575.87
  4. Step 4: Simplify right side
    83,755.85x = 2,584,983,584.67
  5. Step 5: Solve for x
    x = 2,584,983,584.67/83,755.85
  6. Step 6: Final answer
    x = 30,863.32

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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.