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Finding the Fourth Proportional to 78,382.62, 108,169.19 and 44,390.27

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Solution

The fourth proportional to 78,382.62, 108,169.19 and 44,390.27 is: 61,259.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,382.62 : 108,169.19 = 44,390.27 : x
  2. Step 2: Convert to fraction form
    78,382.62/108,169.19 = 44,390.27/x
  3. Step 3: Cross multiply
    78,382.62x = 108,169.19 × 44,390.27
  4. Step 4: Simplify right side
    78,382.62x = 4,801,659,549.78
  5. Step 5: Solve for x
    x = 4,801,659,549.78/78,382.62
  6. Step 6: Final answer
    x = 61,259.24

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1.5x scale

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.