Home / 87,599.47-120,889.78-49,359.47

Finding the Fourth Proportional to 87,599.47, 120,889.78 and 49,359.47

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Solution

The fourth proportional to 87,599.47, 120,889.78 and 49,359.47 is: 68,117.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,599.47 : 120,889.78 = 49,359.47 : x
  2. Step 2: Convert to fraction form
    87,599.47/120,889.78 = 49,359.47/x
  3. Step 3: Cross multiply
    87,599.47x = 120,889.78 × 49,359.47
  4. Step 4: Simplify right side
    87,599.47x = 5,967,055,359.02
  5. Step 5: Solve for x
    x = 5,967,055,359.02/87,599.47
  6. Step 6: Final answer
    x = 68,117.49

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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.