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Finding the Fourth Proportional to 78,472.64, 108,294.72 and 59,576.96

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Solution

The fourth proportional to 78,472.64, 108,294.72 and 59,576.96 is: 82,218.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,472.64 : 108,294.72 = 59,576.96 : x
  2. Step 2: Convert to fraction form
    78,472.64/108,294.72 = 59,576.96/x
  3. Step 3: Cross multiply
    78,472.64x = 108,294.72 × 59,576.96
  4. Step 4: Simplify right side
    78,472.64x = 6,451,870,201.65
  5. Step 5: Solve for x
    x = 6,451,870,201.65/78,472.64
  6. Step 6: Final answer
    x = 82,218.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.