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Finding the Fourth Proportional to 45,172.91, 67,770.13 and 15,591

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Solution

The fourth proportional to 45,172.91, 67,770.13 and 15,591 is: 23,390.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,172.91 : 67,770.13 = 15,591 : x
  2. Step 2: Convert to fraction form
    45,172.91/67,770.13 = 15,591/x
  3. Step 3: Cross multiply
    45,172.91x = 67,770.13 × 15,591
  4. Step 4: Simplify right side
    45,172.91x = 1,056,604,096.83
  5. Step 5: Solve for x
    x = 1,056,604,096.83/45,172.91
  6. Step 6: Final answer
    x = 23,390.22

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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.