Home / 76,436.88-114,613.22-40,939.80

Finding the Fourth Proportional to 76,436.88, 114,613.22 and 40,939.80

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Solution

The fourth proportional to 76,436.88, 114,613.22 and 40,939.80 is: 61,387.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,436.88 : 114,613.22 = 40,939.80 : x
  2. Step 2: Convert to fraction form
    76,436.88/114,613.22 = 40,939.80/x
  3. Step 3: Cross multiply
    76,436.88x = 114,613.22 × 40,939.80
  4. Step 4: Simplify right side
    76,436.88x = 4,692,242,304.16
  5. Step 5: Solve for x
    x = 4,692,242,304.16/76,436.88
  6. Step 6: Final answer
    x = 61,387.15

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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.