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Finding the Fourth Proportional to 79,709.46, 109,974.24 and 45,248.46

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Solution

The fourth proportional to 79,709.46, 109,974.24 and 45,248.46 is: 62,428.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,709.46 : 109,974.24 = 45,248.46 : x
  2. Step 2: Convert to fraction form
    79,709.46/109,974.24 = 45,248.46/x
  3. Step 3: Cross multiply
    79,709.46x = 109,974.24 × 45,248.46
  4. Step 4: Simplify right side
    79,709.46x = 4,976,164,999.67
  5. Step 5: Solve for x
    x = 4,976,164,999.67/79,709.46
  6. Step 6: Final answer
    x = 62,428.79

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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.