Home / 71,640.90-107,206.20-62,382.60

Finding the Fourth Proportional to 71,640.90, 107,206.20 and 62,382.60

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Solution

The fourth proportional to 71,640.90, 107,206.20 and 62,382.60 is: 93,351.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,640.90 : 107,206.20 = 62,382.60 : x
  2. Step 2: Convert to fraction form
    71,640.90/107,206.20 = 62,382.60/x
  3. Step 3: Cross multiply
    71,640.90x = 107,206.20 × 62,382.60
  4. Step 4: Simplify right side
    71,640.90x = 6,687,801,492.12
  5. Step 5: Solve for x
    x = 6,687,801,492.12/71,640.90
  6. Step 6: Final answer
    x = 93,351.72

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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.