Home / 87,274.45-120,437.98-53,275.78

Finding the Fourth Proportional to 87,274.45, 120,437.98 and 53,275.78

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Solution

The fourth proportional to 87,274.45, 120,437.98 and 53,275.78 is: 73,520.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,274.45 : 120,437.98 = 53,275.78 : x
  2. Step 2: Convert to fraction form
    87,274.45/120,437.98 = 53,275.78/x
  3. Step 3: Cross multiply
    87,274.45x = 120,437.98 × 53,275.78
  4. Step 4: Simplify right side
    87,274.45x = 6,416,427,326.12
  5. Step 5: Solve for x
    x = 6,416,427,326.12/87,274.45
  6. Step 6: Final answer
    x = 73,520.11

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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.