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Finding the Fourth Proportional to 87,179.72, 130,900.80 and 49,782.02

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Solution

The fourth proportional to 87,179.72, 130,900.80 and 49,782.02 is: 74,747.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,179.72 : 130,900.80 = 49,782.02 : x
  2. Step 2: Convert to fraction form
    87,179.72/130,900.80 = 49,782.02/x
  3. Step 3: Cross multiply
    87,179.72x = 130,900.80 × 49,782.02
  4. Step 4: Simplify right side
    87,179.72x = 6,516,506,243.62
  5. Step 5: Solve for x
    x = 6,516,506,243.62/87,179.72
  6. Step 6: Final answer
    x = 74,747.96

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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.