Home / 81,445.76-112,397.28-45,635.84

Finding the Fourth Proportional to 81,445.76, 112,397.28 and 45,635.84

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Solution

The fourth proportional to 81,445.76, 112,397.28 and 45,635.84 is: 62,978.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,445.76 : 112,397.28 = 45,635.84 : x
  2. Step 2: Convert to fraction form
    81,445.76/112,397.28 = 45,635.84/x
  3. Step 3: Cross multiply
    81,445.76x = 112,397.28 × 45,635.84
  4. Step 4: Simplify right side
    81,445.76x = 5,129,344,286.52
  5. Step 5: Solve for x
    x = 5,129,344,286.52/81,445.76
  6. Step 6: Final answer
    x = 62,978.65

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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.