Home / 80,539.16-120,755.40-38,425.74

Finding the Fourth Proportional to 80,539.16, 120,755.40 and 38,425.74

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Solution

The fourth proportional to 80,539.16, 120,755.40 and 38,425.74 is: 57,613.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,539.16 : 120,755.40 = 38,425.74 : x
  2. Step 2: Convert to fraction form
    80,539.16/120,755.40 = 38,425.74/x
  3. Step 3: Cross multiply
    80,539.16x = 120,755.40 × 38,425.74
  4. Step 4: Simplify right side
    80,539.16x = 4,640,115,604.00
  5. Step 5: Solve for x
    x = 4,640,115,604.00/80,539.16
  6. Step 6: Final answer
    x = 57,613.16

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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.