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Finding the Fourth Proportional to 80,575.92, 121,068 and 51,007.68

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Solution

The fourth proportional to 80,575.92, 121,068 and 51,007.68 is: 76,640.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,575.92 : 121,068 = 51,007.68 : x
  2. Step 2: Convert to fraction form
    80,575.92/121,068 = 51,007.68/x
  3. Step 3: Cross multiply
    80,575.92x = 121,068 × 51,007.68
  4. Step 4: Simplify right side
    80,575.92x = 6,175,397,802.24
  5. Step 5: Solve for x
    x = 6,175,397,802.24/80,575.92
  6. Step 6: Final answer
    x = 76,640.74

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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.