Home / 87,615.40-120,921.78-49,893.16

Finding the Fourth Proportional to 87,615.40, 120,921.78 and 49,893.16

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Solution

The fourth proportional to 87,615.40, 120,921.78 and 49,893.16 is: 68,859.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,615.40 : 120,921.78 = 49,893.16 : x
  2. Step 2: Convert to fraction form
    87,615.40/120,921.78 = 49,893.16/x
  3. Step 3: Cross multiply
    87,615.40x = 120,921.78 × 49,893.16
  4. Step 4: Simplify right side
    87,615.40x = 6,033,169,717.02
  5. Step 5: Solve for x
    x = 6,033,169,717.02/87,615.40
  6. Step 6: Final answer
    x = 68,859.69

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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.