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Finding the Fourth Proportional to 87,129.19, 130,623.42 and 33,793.63

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Solution

The fourth proportional to 87,129.19, 130,623.42 and 33,793.63 is: 50,663.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,129.19 : 130,623.42 = 33,793.63 : x
  2. Step 2: Convert to fraction form
    87,129.19/130,623.42 = 33,793.63/x
  3. Step 3: Cross multiply
    87,129.19x = 130,623.42 × 33,793.63
  4. Step 4: Simplify right side
    87,129.19x = 4,414,240,059.74
  5. Step 5: Solve for x
    x = 4,414,240,059.74/87,129.19
  6. Step 6: Final answer
    x = 50,663.16

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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.