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Finding the Fourth Proportional to 78,371.80, 108,165.30 and 44,382.04

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Solution

The fourth proportional to 78,371.80, 108,165.30 and 44,382.04 is: 61,254.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,371.80 : 108,165.30 = 44,382.04 : x
  2. Step 2: Convert to fraction form
    78,371.80/108,165.30 = 44,382.04/x
  3. Step 3: Cross multiply
    78,371.80x = 108,165.30 × 44,382.04
  4. Step 4: Simplify right side
    78,371.80x = 4,800,596,671.21
  5. Step 5: Solve for x
    x = 4,800,596,671.21/78,371.80
  6. Step 6: Final answer
    x = 61,254.13

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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.