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Finding the Fourth Proportional to 78,318.70, 108,053.60 and 44,323.61

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Solution

The fourth proportional to 78,318.70, 108,053.60 and 44,323.61 is: 61,151.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,318.70 : 108,053.60 = 44,323.61 : x
  2. Step 2: Convert to fraction form
    78,318.70/108,053.60 = 44,323.61/x
  3. Step 3: Cross multiply
    78,318.70x = 108,053.60 × 44,323.61
  4. Step 4: Simplify right side
    78,318.70x = 4,789,324,863.61
  5. Step 5: Solve for x
    x = 4,789,324,863.61/78,318.70
  6. Step 6: Final answer
    x = 61,151.74

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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.