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Finding the Fourth Proportional to 79,472.64, 119,051.52 and 54,451.20

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Solution

The fourth proportional to 79,472.64, 119,051.52 and 54,451.20 is: 81,568.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,472.64 : 119,051.52 = 54,451.20 : x
  2. Step 2: Convert to fraction form
    79,472.64/119,051.52 = 54,451.20/x
  3. Step 3: Cross multiply
    79,472.64x = 119,051.52 × 54,451.20
  4. Step 4: Simplify right side
    79,472.64x = 6,482,498,125.82
  5. Step 5: Solve for x
    x = 6,482,498,125.82/79,472.64
  6. Step 6: Final answer
    x = 81,568.93

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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.