Home / 40,721.40-61,082.10-30,879.90

Finding the Fourth Proportional to 40,721.40, 61,082.10 and 30,879.90

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Solution

The fourth proportional to 40,721.40, 61,082.10 and 30,879.90 is: 46,319.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,721.40 : 61,082.10 = 30,879.90 : x
  2. Step 2: Convert to fraction form
    40,721.40/61,082.10 = 30,879.90/x
  3. Step 3: Cross multiply
    40,721.40x = 61,082.10 × 30,879.90
  4. Step 4: Simplify right side
    40,721.40x = 1,886,209,139.79
  5. Step 5: Solve for x
    x = 1,886,209,139.79/40,721.40
  6. Step 6: Final answer
    x = 46,319.85

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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.