Home / 87,117.12-130,644.27-30,175.61

Finding the Fourth Proportional to 87,117.12, 130,644.27 and 30,175.61

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Solution

The fourth proportional to 87,117.12, 130,644.27 and 30,175.61 is: 45,252.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,117.12 : 130,644.27 = 30,175.61 : x
  2. Step 2: Convert to fraction form
    87,117.12/130,644.27 = 30,175.61/x
  3. Step 3: Cross multiply
    87,117.12x = 130,644.27 × 30,175.61
  4. Step 4: Simplify right side
    87,117.12x = 3,942,269,887.03
  5. Step 5: Solve for x
    x = 3,942,269,887.03/87,117.12
  6. Step 6: Final answer
    x = 45,252.53

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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.