Home / 86,979.32-120,031.92-48,738.96

Finding the Fourth Proportional to 86,979.32, 120,031.92 and 48,738.96

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Solution

The fourth proportional to 86,979.32, 120,031.92 and 48,738.96 is: 67,260.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,979.32 : 120,031.92 = 48,738.96 : x
  2. Step 2: Convert to fraction form
    86,979.32/120,031.92 = 48,738.96/x
  3. Step 3: Cross multiply
    86,979.32x = 120,031.92 × 48,738.96
  4. Step 4: Simplify right side
    86,979.32x = 5,850,230,947.60
  5. Step 5: Solve for x
    x = 5,850,230,947.60/86,979.32
  6. Step 6: Final answer
    x = 67,260.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.