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Finding the Fourth Proportional to 77,082.99, 115,540.03 and 39,645.04

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Solution

The fourth proportional to 77,082.99, 115,540.03 and 39,645.04 is: 59,424.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,082.99 : 115,540.03 = 39,645.04 : x
  2. Step 2: Convert to fraction form
    77,082.99/115,540.03 = 39,645.04/x
  3. Step 3: Cross multiply
    77,082.99x = 115,540.03 × 39,645.04
  4. Step 4: Simplify right side
    77,082.99x = 4,580,589,110.95
  5. Step 5: Solve for x
    x = 4,580,589,110.95/77,082.99
  6. Step 6: Final answer
    x = 59,424.12

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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.