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Finding the Fourth Proportional to 84,272.32, 126,317.76 and 44,789.76

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Solution

The fourth proportional to 84,272.32, 126,317.76 and 44,789.76 is: 67,136.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,272.32 : 126,317.76 = 44,789.76 : x
  2. Step 2: Convert to fraction form
    84,272.32/126,317.76 = 44,789.76/x
  3. Step 3: Cross multiply
    84,272.32x = 126,317.76 × 44,789.76
  4. Step 4: Simplify right side
    84,272.32x = 5,657,742,154.14
  5. Step 5: Solve for x
    x = 5,657,742,154.14/84,272.32
  6. Step 6: Final answer
    x = 67,136.42

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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.