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Finding the Fourth Proportional to 40,657.52, 61,005.60 and 14,374.64

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Solution

The fourth proportional to 40,657.52, 61,005.60 and 14,374.64 is: 21,568.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,657.52 : 61,005.60 = 14,374.64 : x
  2. Step 2: Convert to fraction form
    40,657.52/61,005.60 = 14,374.64/x
  3. Step 3: Cross multiply
    40,657.52x = 61,005.60 × 14,374.64
  4. Step 4: Simplify right side
    40,657.52x = 876,933,537.98
  5. Step 5: Solve for x
    x = 876,933,537.98/40,657.52
  6. Step 6: Final answer
    x = 21,568.79

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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.