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Finding the Fourth Proportional to 86,682.72, 130,041.90 and 27,517.08

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Solution

The fourth proportional to 86,682.72, 130,041.90 and 27,517.08 is: 41,281.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,682.72 : 130,041.90 = 27,517.08 : x
  2. Step 2: Convert to fraction form
    86,682.72/130,041.90 = 27,517.08/x
  3. Step 3: Cross multiply
    86,682.72x = 130,041.90 × 27,517.08
  4. Step 4: Simplify right side
    86,682.72x = 3,578,373,365.65
  5. Step 5: Solve for x
    x = 3,578,373,365.65/86,682.72
  6. Step 6: Final answer
    x = 41,281.28

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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.