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Finding the Fourth Proportional to 80,874.34, 111,605.46 and 45,065.86

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Solution

The fourth proportional to 80,874.34, 111,605.46 and 45,065.86 is: 62,190.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,874.34 : 111,605.46 = 45,065.86 : x
  2. Step 2: Convert to fraction form
    80,874.34/111,605.46 = 45,065.86/x
  3. Step 3: Cross multiply
    80,874.34x = 111,605.46 × 45,065.86
  4. Step 4: Simplify right side
    80,874.34x = 5,029,596,035.60
  5. Step 5: Solve for x
    x = 5,029,596,035.60/80,874.34
  6. Step 6: Final answer
    x = 62,190.26

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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.