Home / 87,399.06-131,065.20-31,228.62

Finding the Fourth Proportional to 87,399.06, 131,065.20 and 31,228.62

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Solution

The fourth proportional to 87,399.06, 131,065.20 and 31,228.62 is: 46,831.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,399.06 : 131,065.20 = 31,228.62 : x
  2. Step 2: Convert to fraction form
    87,399.06/131,065.20 = 31,228.62/x
  3. Step 3: Cross multiply
    87,399.06x = 131,065.20 × 31,228.62
  4. Step 4: Simplify right side
    87,399.06x = 4,092,985,326.02
  5. Step 5: Solve for x
    x = 4,092,985,326.02/87,399.06
  6. Step 6: Final answer
    x = 46,831.00

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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.