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Finding the Fourth Proportional to 86,791.38, 130,204.50 and 36,871.08

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Solution

The fourth proportional to 86,791.38, 130,204.50 and 36,871.08 is: 55,314.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,791.38 : 130,204.50 = 36,871.08 : x
  2. Step 2: Convert to fraction form
    86,791.38/130,204.50 = 36,871.08/x
  3. Step 3: Cross multiply
    86,791.38x = 130,204.50 × 36,871.08
  4. Step 4: Simplify right side
    86,791.38x = 4,800,780,535.86
  5. Step 5: Solve for x
    x = 4,800,780,535.86/86,791.38
  6. Step 6: Final answer
    x = 55,314.02

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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.