Home / 80,702.18-121,001.34-38,581.32

Finding the Fourth Proportional to 80,702.18, 121,001.34 and 38,581.32

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Solution

The fourth proportional to 80,702.18, 121,001.34 and 38,581.32 is: 57,847.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,702.18 : 121,001.34 = 38,581.32 : x
  2. Step 2: Convert to fraction form
    80,702.18/121,001.34 = 38,581.32/x
  3. Step 3: Cross multiply
    80,702.18x = 121,001.34 × 38,581.32
  4. Step 4: Simplify right side
    80,702.18x = 4,668,391,418.97
  5. Step 5: Solve for x
    x = 4,668,391,418.97/80,702.18
  6. Step 6: Final answer
    x = 57,847.15

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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.