Home / 87,957.65-121,381.49-47,671.43

Finding the Fourth Proportional to 87,957.65, 121,381.49 and 47,671.43

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Solution

The fourth proportional to 87,957.65, 121,381.49 and 47,671.43 is: 65,786.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,957.65 : 121,381.49 = 47,671.43 : x
  2. Step 2: Convert to fraction form
    87,957.65/121,381.49 = 47,671.43/x
  3. Step 3: Cross multiply
    87,957.65x = 121,381.49 × 47,671.43
  4. Step 4: Simplify right side
    87,957.65x = 5,786,428,358.57
  5. Step 5: Solve for x
    x = 5,786,428,358.57/87,957.65
  6. Step 6: Final answer
    x = 65,786.53

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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.