Home / 87,871.88-121,263.17-47,585.66

Finding the Fourth Proportional to 87,871.88, 121,263.17 and 47,585.66

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Solution

The fourth proportional to 87,871.88, 121,263.17 and 47,585.66 is: 65,668.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,871.88 : 121,263.17 = 47,585.66 : x
  2. Step 2: Convert to fraction form
    87,871.88/121,263.17 = 47,585.66/x
  3. Step 3: Cross multiply
    87,871.88x = 121,263.17 × 47,585.66
  4. Step 4: Simplify right side
    87,871.88x = 5,770,387,133.90
  5. Step 5: Solve for x
    x = 5,770,387,133.90/87,871.88
  6. Step 6: Final answer
    x = 65,668.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.