Home / 78,734.25-108,847.67-75,429.45

Finding the Fourth Proportional to 78,734.25, 108,847.67 and 75,429.45

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Solution

The fourth proportional to 78,734.25, 108,847.67 and 75,429.45 is: 104,278.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,734.25 : 108,847.67 = 75,429.45 : x
  2. Step 2: Convert to fraction form
    78,734.25/108,847.67 = 75,429.45/x
  3. Step 3: Cross multiply
    78,734.25x = 108,847.67 × 75,429.45
  4. Step 4: Simplify right side
    78,734.25x = 8,210,319,504.73
  5. Step 5: Solve for x
    x = 8,210,319,504.73/78,734.25
  6. Step 6: Final answer
    x = 104,278.88

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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.