Home / 80,335.17-120,520.95-55,385.13

Finding the Fourth Proportional to 80,335.17, 120,520.95 and 55,385.13

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Solution

The fourth proportional to 80,335.17, 120,520.95 and 55,385.13 is: 83,090.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,335.17 : 120,520.95 = 55,385.13 : x
  2. Step 2: Convert to fraction form
    80,335.17/120,520.95 = 55,385.13/x
  3. Step 3: Cross multiply
    80,335.17x = 120,520.95 × 55,385.13
  4. Step 4: Simplify right side
    80,335.17x = 6,675,068,483.47
  5. Step 5: Solve for x
    x = 6,675,068,483.47/80,335.17
  6. Step 6: Final answer
    x = 83,090.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.