Home / 87,835.18-121,213.20-49,073.08

Finding the Fourth Proportional to 87,835.18, 121,213.20 and 49,073.08

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Solution

The fourth proportional to 87,835.18, 121,213.20 and 49,073.08 is: 67,721.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,835.18 : 121,213.20 = 49,073.08 : x
  2. Step 2: Convert to fraction form
    87,835.18/121,213.20 = 49,073.08/x
  3. Step 3: Cross multiply
    87,835.18x = 121,213.20 × 49,073.08
  4. Step 4: Simplify right side
    87,835.18x = 5,948,305,060.66
  5. Step 5: Solve for x
    x = 5,948,305,060.66/87,835.18
  6. Step 6: Final answer
    x = 67,721.21

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1.5x scale

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.