Home / 80,480.43-120,800.13-60,420.18

Finding the Fourth Proportional to 80,480.43, 120,800.13 and 60,420.18

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Solution

The fourth proportional to 80,480.43, 120,800.13 and 60,420.18 is: 90,689.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,480.43 : 120,800.13 = 60,420.18 : x
  2. Step 2: Convert to fraction form
    80,480.43/120,800.13 = 60,420.18/x
  3. Step 3: Cross multiply
    80,480.43x = 120,800.13 × 60,420.18
  4. Step 4: Simplify right side
    80,480.43x = 7,298,765,598.62
  5. Step 5: Solve for x
    x = 7,298,765,598.62/80,480.43
  6. Step 6: Final answer
    x = 90,689.94

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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.