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Finding the Fourth Proportional to 66,774.76, 100,162.14 and 27,315.88

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Solution

The fourth proportional to 66,774.76, 100,162.14 and 27,315.88 is: 40,973.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,774.76 : 100,162.14 = 27,315.88 : x
  2. Step 2: Convert to fraction form
    66,774.76/100,162.14 = 27,315.88/x
  3. Step 3: Cross multiply
    66,774.76x = 100,162.14 × 27,315.88
  4. Step 4: Simplify right side
    66,774.76x = 2,736,016,996.78
  5. Step 5: Solve for x
    x = 2,736,016,996.78/66,774.76
  6. Step 6: Final answer
    x = 40,973.82

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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.