Home / 90,421.12-135,616.20-23,861.96

Finding the Fourth Proportional to 90,421.12, 135,616.20 and 23,861.96

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Solution

The fourth proportional to 90,421.12, 135,616.20 and 23,861.96 is: 35,788.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,421.12 : 135,616.20 = 23,861.96 : x
  2. Step 2: Convert to fraction form
    90,421.12/135,616.20 = 23,861.96/x
  3. Step 3: Cross multiply
    90,421.12x = 135,616.20 × 23,861.96
  4. Step 4: Simplify right side
    90,421.12x = 3,236,068,339.75
  5. Step 5: Solve for x
    x = 3,236,068,339.75/90,421.12
  6. Step 6: Final answer
    x = 35,788.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.