Home / 66,442.20-99,613.70-40,141.40

Finding the Fourth Proportional to 66,442.20, 99,613.70 and 40,141.40

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Solution

The fourth proportional to 66,442.20, 99,613.70 and 40,141.40 is: 60,182.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,442.20 : 99,613.70 = 40,141.40 : x
  2. Step 2: Convert to fraction form
    66,442.20/99,613.70 = 40,141.40/x
  3. Step 3: Cross multiply
    66,442.20x = 99,613.70 × 40,141.40
  4. Step 4: Simplify right side
    66,442.20x = 3,998,633,377.18
  5. Step 5: Solve for x
    x = 3,998,633,377.18/66,442.20
  6. Step 6: Final answer
    x = 60,182.13

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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.