Home / 87,648.73-120,968.21-64,955.87

Finding the Fourth Proportional to 87,648.73, 120,968.21 and 64,955.87

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Solution

The fourth proportional to 87,648.73, 120,968.21 and 64,955.87 is: 89,648.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,648.73 : 120,968.21 = 64,955.87 : x
  2. Step 2: Convert to fraction form
    87,648.73/120,968.21 = 64,955.87/x
  3. Step 3: Cross multiply
    87,648.73x = 120,968.21 × 64,955.87
  4. Step 4: Simplify right side
    87,648.73x = 7,857,595,831.83
  5. Step 5: Solve for x
    x = 7,857,595,831.83/87,648.73
  6. Step 6: Final answer
    x = 89,648.71

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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.