Home / 79,541.40-119,309.36-20,377.65

Finding the Fourth Proportional to 79,541.40, 119,309.36 and 20,377.65

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Solution

The fourth proportional to 79,541.40, 119,309.36 and 20,377.65 is: 30,565.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,541.40 : 119,309.36 = 20,377.65 : x
  2. Step 2: Convert to fraction form
    79,541.40/119,309.36 = 20,377.65/x
  3. Step 3: Cross multiply
    79,541.40x = 119,309.36 × 20,377.65
  4. Step 4: Simplify right side
    79,541.40x = 2,431,244,277.92
  5. Step 5: Solve for x
    x = 2,431,244,277.92/79,541.40
  6. Step 6: Final answer
    x = 30,565.77

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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.