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Finding the Fourth Proportional to 40,721.32, 61,082.03 and 11,136.97

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Solution

The fourth proportional to 40,721.32, 61,082.03 and 11,136.97 is: 16,705.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,721.32 : 61,082.03 = 11,136.97 : x
  2. Step 2: Convert to fraction form
    40,721.32/61,082.03 = 11,136.97/x
  3. Step 3: Cross multiply
    40,721.32x = 61,082.03 × 11,136.97
  4. Step 4: Simplify right side
    40,721.32x = 680,268,735.65
  5. Step 5: Solve for x
    x = 680,268,735.65/40,721.32
  6. Step 6: Final answer
    x = 16,705.47

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1.5x scale

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.