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Finding the Fourth Proportional to 86,288.80, 129,451.56 and 48,866.44

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Solution

The fourth proportional to 86,288.80, 129,451.56 and 48,866.44 is: 73,310.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,288.80 : 129,451.56 = 48,866.44 : x
  2. Step 2: Convert to fraction form
    86,288.80/129,451.56 = 48,866.44/x
  3. Step 3: Cross multiply
    86,288.80x = 129,451.56 × 48,866.44
  4. Step 4: Simplify right side
    86,288.80x = 6,325,836,889.65
  5. Step 5: Solve for x
    x = 6,325,836,889.65/86,288.80
  6. Step 6: Final answer
    x = 73,310.06

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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.