Home / 80,645.52-111,126.69-62,385.32

Finding the Fourth Proportional to 80,645.52, 111,126.69 and 62,385.32

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Solution

The fourth proportional to 80,645.52, 111,126.69 and 62,385.32 is: 85,964.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,645.52 : 111,126.69 = 62,385.32 : x
  2. Step 2: Convert to fraction form
    80,645.52/111,126.69 = 62,385.32/x
  3. Step 3: Cross multiply
    80,645.52x = 111,126.69 × 62,385.32
  4. Step 4: Simplify right side
    80,645.52x = 6,932,674,569.47
  5. Step 5: Solve for x
    x = 6,932,674,569.47/80,645.52
  6. Step 6: Final answer
    x = 85,964.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.