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Finding the Fourth Proportional to 72,109.83, 108,082.13 and 27,713.73

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Solution

The fourth proportional to 72,109.83, 108,082.13 and 27,713.73 is: 41,538.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,109.83 : 108,082.13 = 27,713.73 : x
  2. Step 2: Convert to fraction form
    72,109.83/108,082.13 = 27,713.73/x
  3. Step 3: Cross multiply
    72,109.83x = 108,082.13 × 27,713.73
  4. Step 4: Simplify right side
    72,109.83x = 2,995,358,830.08
  5. Step 5: Solve for x
    x = 2,995,358,830.08/72,109.83
  6. Step 6: Final answer
    x = 41,538.84

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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.