Home / 49,378.60-74,147.10-45,740.20

Finding the Fourth Proportional to 49,378.60, 74,147.10 and 45,740.20

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Solution

The fourth proportional to 49,378.60, 74,147.10 and 45,740.20 is: 68,683.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,378.60 : 74,147.10 = 45,740.20 : x
  2. Step 2: Convert to fraction form
    49,378.60/74,147.10 = 45,740.20/x
  3. Step 3: Cross multiply
    49,378.60x = 74,147.10 × 45,740.20
  4. Step 4: Simplify right side
    49,378.60x = 3,391,503,183.42
  5. Step 5: Solve for x
    x = 3,391,503,183.42/49,378.60
  6. Step 6: Final answer
    x = 68,683.66

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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.