Home / 78,568.12-108,438.06-50,272.84

Finding the Fourth Proportional to 78,568.12, 108,438.06 and 50,272.84

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Solution

The fourth proportional to 78,568.12, 108,438.06 and 50,272.84 is: 69,385.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,568.12 : 108,438.06 = 50,272.84 : x
  2. Step 2: Convert to fraction form
    78,568.12/108,438.06 = 50,272.84/x
  3. Step 3: Cross multiply
    78,568.12x = 108,438.06 × 50,272.84
  4. Step 4: Simplify right side
    78,568.12x = 5,451,489,240.29
  5. Step 5: Solve for x
    x = 5,451,489,240.29/78,568.12
  6. Step 6: Final answer
    x = 69,385.51

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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.