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Finding the Fourth Proportional to 87,101.92, 130,674.75 and 42,749.56

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Solution

The fourth proportional to 87,101.92, 130,674.75 and 42,749.56 is: 64,135.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,101.92 : 130,674.75 = 42,749.56 : x
  2. Step 2: Convert to fraction form
    87,101.92/130,674.75 = 42,749.56/x
  3. Step 3: Cross multiply
    87,101.92x = 130,674.75 × 42,749.56
  4. Step 4: Simplify right side
    87,101.92x = 5,586,288,065.61
  5. Step 5: Solve for x
    x = 5,586,288,065.61/87,101.92
  6. Step 6: Final answer
    x = 64,135.07

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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.