Home / 87,691.87-120,986.08-53,664.87

Finding the Fourth Proportional to 87,691.87, 120,986.08 and 53,664.87

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Solution

The fourth proportional to 87,691.87, 120,986.08 and 53,664.87 is: 74,039.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,691.87 : 120,986.08 = 53,664.87 : x
  2. Step 2: Convert to fraction form
    87,691.87/120,986.08 = 53,664.87/x
  3. Step 3: Cross multiply
    87,691.87x = 120,986.08 × 53,664.87
  4. Step 4: Simplify right side
    87,691.87x = 6,492,702,255.01
  5. Step 5: Solve for x
    x = 6,492,702,255.01/87,691.87
  6. Step 6: Final answer
    x = 74,039.96

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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.