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Finding the Fourth Proportional to 78,100.80, 107,776.80 and 44,110.68

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Solution

The fourth proportional to 78,100.80, 107,776.80 and 44,110.68 is: 60,871.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,100.80 : 107,776.80 = 44,110.68 : x
  2. Step 2: Convert to fraction form
    78,100.80/107,776.80 = 44,110.68/x
  3. Step 3: Cross multiply
    78,100.80x = 107,776.80 × 44,110.68
  4. Step 4: Simplify right side
    78,100.80x = 4,754,107,936.22
  5. Step 5: Solve for x
    x = 4,754,107,936.22/78,100.80
  6. Step 6: Final answer
    x = 60,871.44

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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.