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Finding the Fourth Proportional to 66,615.68, 99,854.08 and 27,156.48

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Solution

The fourth proportional to 66,615.68, 99,854.08 and 27,156.48 is: 40,706.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,615.68 : 99,854.08 = 27,156.48 : x
  2. Step 2: Convert to fraction form
    66,615.68/99,854.08 = 27,156.48/x
  3. Step 3: Cross multiply
    66,615.68x = 99,854.08 × 27,156.48
  4. Step 4: Simplify right side
    66,615.68x = 2,711,685,326.44
  5. Step 5: Solve for x
    x = 2,711,685,326.44/66,615.68
  6. Step 6: Final answer
    x = 40,706.41

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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.