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Finding the Fourth Proportional to 45,498.53, 68,261.02 and 18,839.61

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Solution

The fourth proportional to 45,498.53, 68,261.02 and 18,839.61 is: 28,264.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,498.53 : 68,261.02 = 18,839.61 : x
  2. Step 2: Convert to fraction form
    45,498.53/68,261.02 = 18,839.61/x
  3. Step 3: Cross multiply
    45,498.53x = 68,261.02 × 18,839.61
  4. Step 4: Simplify right side
    45,498.53x = 1,286,010,947.90
  5. Step 5: Solve for x
    x = 1,286,010,947.90/45,498.53
  6. Step 6: Final answer
    x = 28,264.89

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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.