Home / 79,541.28-119,302.94-20,377.40

Finding the Fourth Proportional to 79,541.28, 119,302.94 and 20,377.40

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Solution

The fourth proportional to 79,541.28, 119,302.94 and 20,377.40 is: 30,563.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,541.28 : 119,302.94 = 20,377.40 : x
  2. Step 2: Convert to fraction form
    79,541.28/119,302.94 = 20,377.40/x
  3. Step 3: Cross multiply
    79,541.28x = 119,302.94 × 20,377.40
  4. Step 4: Simplify right side
    79,541.28x = 2,431,083,729.56
  5. Step 5: Solve for x
    x = 2,431,083,729.56/79,541.28
  6. Step 6: Final answer
    x = 30,563.80

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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.