Home / 87,806.50-121,171.95-47,519.33

Finding the Fourth Proportional to 87,806.50, 121,171.95 and 47,519.33

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Solution

The fourth proportional to 87,806.50, 121,171.95 and 47,519.33 is: 65,576.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,806.50 : 121,171.95 = 47,519.33 : x
  2. Step 2: Convert to fraction form
    87,806.50/121,171.95 = 47,519.33/x
  3. Step 3: Cross multiply
    87,806.50x = 121,171.95 × 47,519.33
  4. Step 4: Simplify right side
    87,806.50x = 5,758,009,272.93
  5. Step 5: Solve for x
    x = 5,758,009,272.93/87,806.50
  6. Step 6: Final answer
    x = 65,576.12

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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.