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Finding the Fourth Proportional to 72,082.16, 108,122.96 and 19,491.62

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Solution

The fourth proportional to 72,082.16, 108,122.96 and 19,491.62 is: 29,237.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,082.16 : 108,122.96 = 19,491.62 : x
  2. Step 2: Convert to fraction form
    72,082.16/108,122.96 = 19,491.62/x
  3. Step 3: Cross multiply
    72,082.16x = 108,122.96 × 19,491.62
  4. Step 4: Simplify right side
    72,082.16x = 2,107,491,649.60
  5. Step 5: Solve for x
    x = 2,107,491,649.60/72,082.16
  6. Step 6: Final answer
    x = 29,237.35

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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.