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Finding the Fourth Proportional to 80,950.96, 111,712.96 and 45,143.30

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Solution

The fourth proportional to 80,950.96, 111,712.96 and 45,143.30 is: 62,298.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,950.96 : 111,712.96 = 45,143.30 : x
  2. Step 2: Convert to fraction form
    80,950.96/111,712.96 = 45,143.30/x
  3. Step 3: Cross multiply
    80,950.96x = 111,712.96 × 45,143.30
  4. Step 4: Simplify right side
    80,950.96x = 5,043,091,667.17
  5. Step 5: Solve for x
    x = 5,043,091,667.17/80,950.96
  6. Step 6: Final answer
    x = 62,298.11

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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.