Home / 86,847.28-130,286.52-30,719.92

Finding the Fourth Proportional to 86,847.28, 130,286.52 and 30,719.92

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Solution

The fourth proportional to 86,847.28, 130,286.52 and 30,719.92 is: 46,085.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,847.28 : 130,286.52 = 30,719.92 : x
  2. Step 2: Convert to fraction form
    86,847.28/130,286.52 = 30,719.92/x
  3. Step 3: Cross multiply
    86,847.28x = 130,286.52 × 30,719.92
  4. Step 4: Simplify right side
    86,847.28x = 4,002,391,471.48
  5. Step 5: Solve for x
    x = 4,002,391,471.48/86,847.28
  6. Step 6: Final answer
    x = 46,085.40

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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.