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Finding the Fourth Proportional to 67,131, 92,641.23 and 36,915.39

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Solution

The fourth proportional to 67,131, 92,641.23 and 36,915.39 is: 50,943.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,131 : 92,641.23 = 36,915.39 : x
  2. Step 2: Convert to fraction form
    67,131/92,641.23 = 36,915.39/x
  3. Step 3: Cross multiply
    67,131x = 92,641.23 × 36,915.39
  4. Step 4: Simplify right side
    67,131x = 3,419,887,135.53
  5. Step 5: Solve for x
    x = 3,419,887,135.53/67,131
  6. Step 6: Final answer
    x = 50,943.49

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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.