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Finding the Fourth Proportional to 45,432.92, 68,129.92 and 15,842

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Solution

The fourth proportional to 45,432.92, 68,129.92 and 15,842 is: 23,756.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,432.92 : 68,129.92 = 15,842 : x
  2. Step 2: Convert to fraction form
    45,432.92/68,129.92 = 15,842/x
  3. Step 3: Cross multiply
    45,432.92x = 68,129.92 × 15,842
  4. Step 4: Simplify right side
    45,432.92x = 1,079,314,192.64
  5. Step 5: Solve for x
    x = 1,079,314,192.64/45,432.92
  6. Step 6: Final answer
    x = 23,756.21

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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.