Home / 87,579.28-120,859.77-49,339.28

Finding the Fourth Proportional to 87,579.28, 120,859.77 and 49,339.28

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Solution

The fourth proportional to 87,579.28, 120,859.77 and 49,339.28 is: 68,088.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,579.28 : 120,859.77 = 49,339.28 : x
  2. Step 2: Convert to fraction form
    87,579.28/120,859.77 = 49,339.28/x
  3. Step 3: Cross multiply
    87,579.28x = 120,859.77 × 49,339.28
  4. Step 4: Simplify right side
    87,579.28x = 5,963,134,032.77
  5. Step 5: Solve for x
    x = 5,963,134,032.77/87,579.28
  6. Step 6: Final answer
    x = 68,088.42

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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.