Home / 87,695.97-121,017.50-55,447.95

Finding the Fourth Proportional to 87,695.97, 121,017.50 and 55,447.95

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Solution

The fourth proportional to 87,695.97, 121,017.50 and 55,447.95 is: 76,516.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,695.97 : 121,017.50 = 55,447.95 : x
  2. Step 2: Convert to fraction form
    87,695.97/121,017.50 = 55,447.95/x
  3. Step 3: Cross multiply
    87,695.97x = 121,017.50 × 55,447.95
  4. Step 4: Simplify right side
    87,695.97x = 6,710,172,011.89
  5. Step 5: Solve for x
    x = 6,710,172,011.89/87,695.97
  6. Step 6: Final answer
    x = 76,516.31

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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.