Home / 80,876.50-111,608.05-45,065.74

Finding the Fourth Proportional to 80,876.50, 111,608.05 and 45,065.74

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Solution

The fourth proportional to 80,876.50, 111,608.05 and 45,065.74 is: 62,189.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,876.50 : 111,608.05 = 45,065.74 : x
  2. Step 2: Convert to fraction form
    80,876.50/111,608.05 = 45,065.74/x
  3. Step 3: Cross multiply
    80,876.50x = 111,608.05 × 45,065.74
  4. Step 4: Simplify right side
    80,876.50x = 5,029,699,363.21
  5. Step 5: Solve for x
    x = 5,029,699,363.21/80,876.50
  6. Step 6: Final answer
    x = 62,189.87

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1.5x scale

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.