Home / 87,321.08-130,856.48-49,803.50

Finding the Fourth Proportional to 87,321.08, 130,856.48 and 49,803.50

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Solution

The fourth proportional to 87,321.08, 130,856.48 and 49,803.50 is: 74,633.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,321.08 : 130,856.48 = 49,803.50 : x
  2. Step 2: Convert to fraction form
    87,321.08/130,856.48 = 49,803.50/x
  3. Step 3: Cross multiply
    87,321.08x = 130,856.48 × 49,803.50
  4. Step 4: Simplify right side
    87,321.08x = 6,517,110,701.68
  5. Step 5: Solve for x
    x = 6,517,110,701.68/87,321.08
  6. Step 6: Final answer
    x = 74,633.88

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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.