Home / 87,806.17-121,172.67-47,519.97

Finding the Fourth Proportional to 87,806.17, 121,172.67 and 47,519.97

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Solution

The fourth proportional to 87,806.17, 121,172.67 and 47,519.97 is: 65,577.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,806.17 : 121,172.67 = 47,519.97 : x
  2. Step 2: Convert to fraction form
    87,806.17/121,172.67 = 47,519.97/x
  3. Step 3: Cross multiply
    87,806.17x = 121,172.67 × 47,519.97
  4. Step 4: Simplify right side
    87,806.17x = 5,758,121,736.77
  5. Step 5: Solve for x
    x = 5,758,121,736.77/87,806.17
  6. Step 6: Final answer
    x = 65,577.64

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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.