Home / 80,480.16-120,838.75-45,010.96

Finding the Fourth Proportional to 80,480.16, 120,838.75 and 45,010.96

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Solution

The fourth proportional to 80,480.16, 120,838.75 and 45,010.96 is: 67,582.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,480.16 : 120,838.75 = 45,010.96 : x
  2. Step 2: Convert to fraction form
    80,480.16/120,838.75 = 45,010.96/x
  3. Step 3: Cross multiply
    80,480.16x = 120,838.75 × 45,010.96
  4. Step 4: Simplify right side
    80,480.16x = 5,439,067,728.08
  5. Step 5: Solve for x
    x = 5,439,067,728.08/80,480.16
  6. Step 6: Final answer
    x = 67,582.72

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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.