Home / 78,923.80-108,922.35-43,119.20

Finding the Fourth Proportional to 78,923.80, 108,922.35 and 43,119.20

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Solution

The fourth proportional to 78,923.80, 108,922.35 and 43,119.20 is: 59,508.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,923.80 : 108,922.35 = 43,119.20 : x
  2. Step 2: Convert to fraction form
    78,923.80/108,922.35 = 43,119.20/x
  3. Step 3: Cross multiply
    78,923.80x = 108,922.35 × 43,119.20
  4. Step 4: Simplify right side
    78,923.80x = 4,696,645,028.12
  5. Step 5: Solve for x
    x = 4,696,645,028.12/78,923.80
  6. Step 6: Final answer
    x = 59,508.60

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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.