Home / 81,061.08-121,591.48-45,060.44

Finding the Fourth Proportional to 81,061.08, 121,591.48 and 45,060.44

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Solution

The fourth proportional to 81,061.08, 121,591.48 and 45,060.44 is: 67,590.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,061.08 : 121,591.48 = 45,060.44 : x
  2. Step 2: Convert to fraction form
    81,061.08/121,591.48 = 45,060.44/x
  3. Step 3: Cross multiply
    81,061.08x = 121,591.48 × 45,060.44
  4. Step 4: Simplify right side
    81,061.08x = 5,478,965,589.05
  5. Step 5: Solve for x
    x = 5,478,965,589.05/81,061.08
  6. Step 6: Final answer
    x = 67,590.58

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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.