Home / 87,421.05-120,524.92-57,154.34

Finding the Fourth Proportional to 87,421.05, 120,524.92 and 57,154.34

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Solution

The fourth proportional to 87,421.05, 120,524.92 and 57,154.34 is: 78,797.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,421.05 : 120,524.92 = 57,154.34 : x
  2. Step 2: Convert to fraction form
    87,421.05/120,524.92 = 57,154.34/x
  3. Step 3: Cross multiply
    87,421.05x = 120,524.92 × 57,154.34
  4. Step 4: Simplify right side
    87,421.05x = 6,888,522,402.92
  5. Step 5: Solve for x
    x = 6,888,522,402.92/87,421.05
  6. Step 6: Final answer
    x = 78,797.06

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1.5x scale

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.