Home / 80,036.10-119,970.72-30,081.78

Finding the Fourth Proportional to 80,036.10, 119,970.72 and 30,081.78

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Solution

The fourth proportional to 80,036.10, 119,970.72 and 30,081.78 is: 45,091.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,036.10 : 119,970.72 = 30,081.78 : x
  2. Step 2: Convert to fraction form
    80,036.10/119,970.72 = 30,081.78/x
  3. Step 3: Cross multiply
    80,036.10x = 119,970.72 × 30,081.78
  4. Step 4: Simplify right side
    80,036.10x = 3,608,932,805.48
  5. Step 5: Solve for x
    x = 3,608,932,805.48/80,036.10
  6. Step 6: Final answer
    x = 45,091.31

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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.