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Finding the Fourth Proportional to 66,829.90, 100,244.85 and 65,793.10

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Solution

The fourth proportional to 66,829.90, 100,244.85 and 65,793.10 is: 98,689.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,829.90 : 100,244.85 = 65,793.10 : x
  2. Step 2: Convert to fraction form
    66,829.90/100,244.85 = 65,793.10/x
  3. Step 3: Cross multiply
    66,829.90x = 100,244.85 × 65,793.10
  4. Step 4: Simplify right side
    66,829.90x = 6,595,419,440.54
  5. Step 5: Solve for x
    x = 6,595,419,440.54/66,829.90
  6. Step 6: Final answer
    x = 98,689.65

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1.5x scale

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.