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Finding the Fourth Proportional to 76,742.64, 115,129.68 and 32,369.52

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Solution

The fourth proportional to 76,742.64, 115,129.68 and 32,369.52 is: 48,560.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,742.64 : 115,129.68 = 32,369.52 : x
  2. Step 2: Convert to fraction form
    76,742.64/115,129.68 = 32,369.52/x
  3. Step 3: Cross multiply
    76,742.64x = 115,129.68 × 32,369.52
  4. Step 4: Simplify right side
    76,742.64x = 3,726,692,479.35
  5. Step 5: Solve for x
    x = 3,726,692,479.35/76,742.64
  6. Step 6: Final answer
    x = 48,560.91

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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.