Home / 78,722.04-108,634.25-42,912.75

Finding the Fourth Proportional to 78,722.04, 108,634.25 and 42,912.75

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Solution

The fourth proportional to 78,722.04, 108,634.25 and 42,912.75 is: 59,218.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,722.04 : 108,634.25 = 42,912.75 : x
  2. Step 2: Convert to fraction form
    78,722.04/108,634.25 = 42,912.75/x
  3. Step 3: Cross multiply
    78,722.04x = 108,634.25 × 42,912.75
  4. Step 4: Simplify right side
    78,722.04x = 4,661,794,197.12
  5. Step 5: Solve for x
    x = 4,661,794,197.12/78,722.04
  6. Step 6: Final answer
    x = 59,218.41

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1.5x scale

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.