Home / 78,613.38-108,487.21-45,072.90

Finding the Fourth Proportional to 78,613.38, 108,487.21 and 45,072.90

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Solution

The fourth proportional to 78,613.38, 108,487.21 and 45,072.90 is: 62,201.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,613.38 : 108,487.21 = 45,072.90 : x
  2. Step 2: Convert to fraction form
    78,613.38/108,487.21 = 45,072.90/x
  3. Step 3: Cross multiply
    78,613.38x = 108,487.21 × 45,072.90
  4. Step 4: Simplify right side
    78,613.38x = 4,889,833,167.61
  5. Step 5: Solve for x
    x = 4,889,833,167.61/78,613.38
  6. Step 6: Final answer
    x = 62,201.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.