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Finding the Fourth Proportional to 79,299.53, 109,432.85 and 45,318.41

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Solution

The fourth proportional to 79,299.53, 109,432.85 and 45,318.41 is: 62,539.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,299.53 : 109,432.85 = 45,318.41 : x
  2. Step 2: Convert to fraction form
    79,299.53/109,432.85 = 45,318.41/x
  3. Step 3: Cross multiply
    79,299.53x = 109,432.85 × 45,318.41
  4. Step 4: Simplify right side
    79,299.53x = 4,959,323,150.65
  5. Step 5: Solve for x
    x = 4,959,323,150.65/79,299.53
  6. Step 6: Final answer
    x = 62,539.12

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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.