Home / 87,416.43-120,653.78-55,579.11

Finding the Fourth Proportional to 87,416.43, 120,653.78 and 55,579.11

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Solution

The fourth proportional to 87,416.43, 120,653.78 and 55,579.11 is: 76,711.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,416.43 : 120,653.78 = 55,579.11 : x
  2. Step 2: Convert to fraction form
    87,416.43/120,653.78 = 55,579.11/x
  3. Step 3: Cross multiply
    87,416.43x = 120,653.78 × 55,579.11
  4. Step 4: Simplify right side
    87,416.43x = 6,705,829,432.64
  5. Step 5: Solve for x
    x = 6,705,829,432.64/87,416.43
  6. Step 6: Final answer
    x = 76,711.32

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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.