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Finding the Fourth Proportional to 80,057.53, 110,450.18 and 61,666.21

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Solution

The fourth proportional to 80,057.53, 110,450.18 and 61,666.21 is: 85,076.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,057.53 : 110,450.18 = 61,666.21 : x
  2. Step 2: Convert to fraction form
    80,057.53/110,450.18 = 61,666.21/x
  3. Step 3: Cross multiply
    80,057.53x = 110,450.18 × 61,666.21
  4. Step 4: Simplify right side
    80,057.53x = 6,811,044,286.65
  5. Step 5: Solve for x
    x = 6,811,044,286.65/80,057.53
  6. Step 6: Final answer
    x = 85,076.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.