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Finding the Fourth Proportional to 86,481.68, 129,703.62 and 33,155.60

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Solution

The fourth proportional to 86,481.68, 129,703.62 and 33,155.60 is: 49,726.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,481.68 : 129,703.62 = 33,155.60 : x
  2. Step 2: Convert to fraction form
    86,481.68/129,703.62 = 33,155.60/x
  3. Step 3: Cross multiply
    86,481.68x = 129,703.62 × 33,155.60
  4. Step 4: Simplify right side
    86,481.68x = 4,300,401,343.27
  5. Step 5: Solve for x
    x = 4,300,401,343.27/86,481.68
  6. Step 6: Final answer
    x = 49,726.15

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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.