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Finding the Fourth Proportional to 92,613.10, 138,915.78 and 39,290.44

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Solution

The fourth proportional to 92,613.10, 138,915.78 and 39,290.44 is: 58,934.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,613.10 : 138,915.78 = 39,290.44 : x
  2. Step 2: Convert to fraction form
    92,613.10/138,915.78 = 39,290.44/x
  3. Step 3: Cross multiply
    92,613.10x = 138,915.78 × 39,290.44
  4. Step 4: Simplify right side
    92,613.10x = 5,458,062,119.14
  5. Step 5: Solve for x
    x = 5,458,062,119.14/92,613.10
  6. Step 6: Final answer
    x = 58,934.02

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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.