Home / 80,060.10-119,973.51-45,009.78

Finding the Fourth Proportional to 80,060.10, 119,973.51 and 45,009.78

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Solution

The fourth proportional to 80,060.10, 119,973.51 and 45,009.78 is: 67,449.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,060.10 : 119,973.51 = 45,009.78 : x
  2. Step 2: Convert to fraction form
    80,060.10/119,973.51 = 45,009.78/x
  3. Step 3: Cross multiply
    80,060.10x = 119,973.51 × 45,009.78
  4. Step 4: Simplify right side
    80,060.10x = 5,399,981,290.93
  5. Step 5: Solve for x
    x = 5,399,981,290.93/80,060.10
  6. Step 6: Final answer
    x = 67,449.10

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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.