Home / 66,787.14-100,143.18-45,750.90

Finding the Fourth Proportional to 66,787.14, 100,143.18 and 45,750.90

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Solution

The fourth proportional to 66,787.14, 100,143.18 and 45,750.90 is: 68,600.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,787.14 : 100,143.18 = 45,750.90 : x
  2. Step 2: Convert to fraction form
    66,787.14/100,143.18 = 45,750.90/x
  3. Step 3: Cross multiply
    66,787.14x = 100,143.18 × 45,750.90
  4. Step 4: Simplify right side
    66,787.14x = 4,581,640,613.86
  5. Step 5: Solve for x
    x = 4,581,640,613.86/66,787.14
  6. Step 6: Final answer
    x = 68,600.64

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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.