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Finding the Fourth Proportional to 78,979.80, 108,991.96 and 44,988.27

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Solution

The fourth proportional to 78,979.80, 108,991.96 and 44,988.27 is: 62,083.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,979.80 : 108,991.96 = 44,988.27 : x
  2. Step 2: Convert to fraction form
    78,979.80/108,991.96 = 44,988.27/x
  3. Step 3: Cross multiply
    78,979.80x = 108,991.96 × 44,988.27
  4. Step 4: Simplify right side
    78,979.80x = 4,903,359,724.31
  5. Step 5: Solve for x
    x = 4,903,359,724.31/78,979.80
  6. Step 6: Final answer
    x = 62,083.72

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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.