Home / 87,686.55-121,005.80-49,445.49

Finding the Fourth Proportional to 87,686.55, 121,005.80 and 49,445.49

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Solution

The fourth proportional to 87,686.55, 121,005.80 and 49,445.49 is: 68,233.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,686.55 : 121,005.80 = 49,445.49 : x
  2. Step 2: Convert to fraction form
    87,686.55/121,005.80 = 49,445.49/x
  3. Step 3: Cross multiply
    87,686.55x = 121,005.80 × 49,445.49
  4. Step 4: Simplify right side
    87,686.55x = 5,983,190,785.15
  5. Step 5: Solve for x
    x = 5,983,190,785.15/87,686.55
  6. Step 6: Final answer
    x = 68,233.85

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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.