Home / 78,365.07-108,217.61-54,556.85

Finding the Fourth Proportional to 78,365.07, 108,217.61 and 54,556.85

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Solution

The fourth proportional to 78,365.07, 108,217.61 and 54,556.85 is: 75,339.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,365.07 : 108,217.61 = 54,556.85 : x
  2. Step 2: Convert to fraction form
    78,365.07/108,217.61 = 54,556.85/x
  3. Step 3: Cross multiply
    78,365.07x = 108,217.61 × 54,556.85
  4. Step 4: Simplify right side
    78,365.07x = 5,904,011,102.26
  5. Step 5: Solve for x
    x = 5,904,011,102.26/78,365.07
  6. Step 6: Final answer
    x = 75,339.83

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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.