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Finding the Fourth Proportional to 87,080.96, 130,602.24 and 42,663.68

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Solution

The fourth proportional to 87,080.96, 130,602.24 and 42,663.68 is: 63,986.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,080.96 : 130,602.24 = 42,663.68 : x
  2. Step 2: Convert to fraction form
    87,080.96/130,602.24 = 42,663.68/x
  3. Step 3: Cross multiply
    87,080.96x = 130,602.24 × 42,663.68
  4. Step 4: Simplify right side
    87,080.96x = 5,571,972,174.64
  5. Step 5: Solve for x
    x = 5,571,972,174.64/87,080.96
  6. Step 6: Final answer
    x = 63,986.11

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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.