Home / 87,806.14-121,172.47-47,519.90

Finding the Fourth Proportional to 87,806.14, 121,172.47 and 47,519.90

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Solution

The fourth proportional to 87,806.14, 121,172.47 and 47,519.90 is: 65,577.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,806.14 : 121,172.47 = 47,519.90 : x
  2. Step 2: Convert to fraction form
    87,806.14/121,172.47 = 47,519.90/x
  3. Step 3: Cross multiply
    87,806.14x = 121,172.47 × 47,519.90
  4. Step 4: Simplify right side
    87,806.14x = 5,758,103,657.15
  5. Step 5: Solve for x
    x = 5,758,103,657.15/87,806.14
  6. Step 6: Final answer
    x = 65,577.46

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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.