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Finding the Fourth Proportional to 79,957.92, 120,036.24 and 51,785.76

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Solution

The fourth proportional to 79,957.92, 120,036.24 and 51,785.76 is: 77,742.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,957.92 : 120,036.24 = 51,785.76 : x
  2. Step 2: Convert to fraction form
    79,957.92/120,036.24 = 51,785.76/x
  3. Step 3: Cross multiply
    79,957.92x = 120,036.24 × 51,785.76
  4. Step 4: Simplify right side
    79,957.92x = 6,216,167,915.94
  5. Step 5: Solve for x
    x = 6,216,167,915.94/79,957.92
  6. Step 6: Final answer
    x = 77,742.99

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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.