Home / 78,431.68-108,161.22-51,596.92

Finding the Fourth Proportional to 78,431.68, 108,161.22 and 51,596.92

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Solution

The fourth proportional to 78,431.68, 108,161.22 and 51,596.92 is: 71,154.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,431.68 : 108,161.22 = 51,596.92 : x
  2. Step 2: Convert to fraction form
    78,431.68/108,161.22 = 51,596.92/x
  3. Step 3: Cross multiply
    78,431.68x = 108,161.22 × 51,596.92
  4. Step 4: Simplify right side
    78,431.68x = 5,580,785,815.44
  5. Step 5: Solve for x
    x = 5,580,785,815.44/78,431.68
  6. Step 6: Final answer
    x = 71,154.74

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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.