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Finding the Fourth Proportional to 107,691.66, 161,525.21 and 28,811.97

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Solution

The fourth proportional to 107,691.66, 161,525.21 and 28,811.97 is: 43,214.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,691.66 : 161,525.21 = 28,811.97 : x
  2. Step 2: Convert to fraction form
    107,691.66/161,525.21 = 28,811.97/x
  3. Step 3: Cross multiply
    107,691.66x = 161,525.21 × 28,811.97
  4. Step 4: Simplify right side
    107,691.66x = 4,653,859,360.70
  5. Step 5: Solve for x
    x = 4,653,859,360.70/107,691.66
  6. Step 6: Final answer
    x = 43,214.67

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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.