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Finding the Fourth Proportional to 49,687.58, 74,531.43 and 12,248.57

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Solution

The fourth proportional to 49,687.58, 74,531.43 and 12,248.57 is: 18,372.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,687.58 : 74,531.43 = 12,248.57 : x
  2. Step 2: Convert to fraction form
    49,687.58/74,531.43 = 12,248.57/x
  3. Step 3: Cross multiply
    49,687.58x = 74,531.43 × 12,248.57
  4. Step 4: Simplify right side
    49,687.58x = 912,903,064.90
  5. Step 5: Solve for x
    x = 912,903,064.90/49,687.58
  6. Step 6: Final answer
    x = 18,372.86

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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.