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Finding the Fourth Proportional to 83,672.61, 115,468.34 and 45,432.23

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Solution

The fourth proportional to 83,672.61, 115,468.34 and 45,432.23 is: 62,696.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,672.61 : 115,468.34 = 45,432.23 : x
  2. Step 2: Convert to fraction form
    83,672.61/115,468.34 = 45,432.23/x
  3. Step 3: Cross multiply
    83,672.61x = 115,468.34 × 45,432.23
  4. Step 4: Simplify right side
    83,672.61x = 5,245,984,497.66
  5. Step 5: Solve for x
    x = 5,245,984,497.66/83,672.61
  6. Step 6: Final answer
    x = 62,696.56

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Double scale
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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.