Home / 74,313.28-111,472.96-18,910.72

Finding the Fourth Proportional to 74,313.28, 111,472.96 and 18,910.72

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Solution

The fourth proportional to 74,313.28, 111,472.96 and 18,910.72 is: 28,366.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,313.28 : 111,472.96 = 18,910.72 : x
  2. Step 2: Convert to fraction form
    74,313.28/111,472.96 = 18,910.72/x
  3. Step 3: Cross multiply
    74,313.28x = 111,472.96 × 18,910.72
  4. Step 4: Simplify right side
    74,313.28x = 2,108,033,934.13
  5. Step 5: Solve for x
    x = 2,108,033,934.13/74,313.28
  6. Step 6: Final answer
    x = 28,366.85

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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.