Home / 80,566.20-120,734.10-55,913.40

Finding the Fourth Proportional to 80,566.20, 120,734.10 and 55,913.40

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Solution

The fourth proportional to 80,566.20, 120,734.10 and 55,913.40 is: 83,790.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,566.20 : 120,734.10 = 55,913.40 : x
  2. Step 2: Convert to fraction form
    80,566.20/120,734.10 = 55,913.40/x
  3. Step 3: Cross multiply
    80,566.20x = 120,734.10 × 55,913.40
  4. Step 4: Simplify right side
    80,566.20x = 6,750,654,026.94
  5. Step 5: Solve for x
    x = 6,750,654,026.94/80,566.20
  6. Step 6: Final answer
    x = 83,790.15

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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.