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Finding the Fourth Proportional to 68,613.80, 102,720.22 and 48,930.80

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Solution

The fourth proportional to 68,613.80, 102,720.22 and 48,930.80 is: 73,253.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,613.80 : 102,720.22 = 48,930.80 : x
  2. Step 2: Convert to fraction form
    68,613.80/102,720.22 = 48,930.80/x
  3. Step 3: Cross multiply
    68,613.80x = 102,720.22 × 48,930.80
  4. Step 4: Simplify right side
    68,613.80x = 5,026,182,540.78
  5. Step 5: Solve for x
    x = 5,026,182,540.78/68,613.80
  6. Step 6: Final answer
    x = 73,253.23

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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.