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Finding the Fourth Proportional to 78,756.29, 108,686.40 and 44,766.20

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Solution

The fourth proportional to 78,756.29, 108,686.40 and 44,766.20 is: 61,778.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,756.29 : 108,686.40 = 44,766.20 : x
  2. Step 2: Convert to fraction form
    78,756.29/108,686.40 = 44,766.20/x
  3. Step 3: Cross multiply
    78,756.29x = 108,686.40 × 44,766.20
  4. Step 4: Simplify right side
    78,756.29x = 4,865,476,576.25
  5. Step 5: Solve for x
    x = 4,865,476,576.25/78,756.29
  6. Step 6: Final answer
    x = 61,778.90

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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.