Home / 78,786.90-108,867.51-59,891.22

Finding the Fourth Proportional to 78,786.90, 108,867.51 and 59,891.22

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Solution

The fourth proportional to 78,786.90, 108,867.51 and 59,891.22 is: 82,757.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,786.90 : 108,867.51 = 59,891.22 : x
  2. Step 2: Convert to fraction form
    78,786.90/108,867.51 = 59,891.22/x
  3. Step 3: Cross multiply
    78,786.90x = 108,867.51 × 59,891.22
  4. Step 4: Simplify right side
    78,786.90x = 6,520,207,992.26
  5. Step 5: Solve for x
    x = 6,520,207,992.26/78,786.90
  6. Step 6: Final answer
    x = 82,757.51

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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.