Home / 87,668.76-120,953.32-49,916.28

Finding the Fourth Proportional to 87,668.76, 120,953.32 and 49,916.28

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Solution

The fourth proportional to 87,668.76, 120,953.32 and 49,916.28 is: 68,867.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,668.76 : 120,953.32 = 49,916.28 : x
  2. Step 2: Convert to fraction form
    87,668.76/120,953.32 = 49,916.28/x
  3. Step 3: Cross multiply
    87,668.76x = 120,953.32 × 49,916.28
  4. Step 4: Simplify right side
    87,668.76x = 6,037,539,788.05
  5. Step 5: Solve for x
    x = 6,037,539,788.05/87,668.76
  6. Step 6: Final answer
    x = 68,867.63

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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.