Home / 87,959.18-121,389.86-49,719.01

Finding the Fourth Proportional to 87,959.18, 121,389.86 and 49,719.01

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Solution

The fourth proportional to 87,959.18, 121,389.86 and 49,719.01 is: 68,615.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,959.18 : 121,389.86 = 49,719.01 : x
  2. Step 2: Convert to fraction form
    87,959.18/121,389.86 = 49,719.01/x
  3. Step 3: Cross multiply
    87,959.18x = 121,389.86 × 49,719.01
  4. Step 4: Simplify right side
    87,959.18x = 6,035,383,663.24
  5. Step 5: Solve for x
    x = 6,035,383,663.24/87,959.18
  6. Step 6: Final answer
    x = 68,615.73

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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.