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Finding the Fourth Proportional to 69,082.81, 103,624.20 and 19,162.91

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Solution

The fourth proportional to 69,082.81, 103,624.20 and 19,162.91 is: 28,744.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,082.81 : 103,624.20 = 19,162.91 : x
  2. Step 2: Convert to fraction form
    69,082.81/103,624.20 = 19,162.91/x
  3. Step 3: Cross multiply
    69,082.81x = 103,624.20 × 19,162.91
  4. Step 4: Simplify right side
    69,082.81x = 1,985,741,218.42
  5. Step 5: Solve for x
    x = 1,985,741,218.42/69,082.81
  6. Step 6: Final answer
    x = 28,744.36

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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.