Home / 78,716.24-108,629.67-42,906.27

Finding the Fourth Proportional to 78,716.24, 108,629.67 and 42,906.27

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Solution

The fourth proportional to 78,716.24, 108,629.67 and 42,906.27 is: 59,211.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,716.24 : 108,629.67 = 42,906.27 : x
  2. Step 2: Convert to fraction form
    78,716.24/108,629.67 = 42,906.27/x
  3. Step 3: Cross multiply
    78,716.24x = 108,629.67 × 42,906.27
  4. Step 4: Simplify right side
    78,716.24x = 4,660,893,951.03
  5. Step 5: Solve for x
    x = 4,660,893,951.03/78,716.24
  6. Step 6: Final answer
    x = 59,211.34

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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.