Home / 90,334.10-135,446.42-40,404.90

Finding the Fourth Proportional to 90,334.10, 135,446.42 and 40,404.90

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Solution

The fourth proportional to 90,334.10, 135,446.42 and 40,404.90 is: 60,582.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,334.10 : 135,446.42 = 40,404.90 : x
  2. Step 2: Convert to fraction form
    90,334.10/135,446.42 = 40,404.90/x
  3. Step 3: Cross multiply
    90,334.10x = 135,446.42 × 40,404.90
  4. Step 4: Simplify right side
    90,334.10x = 5,472,699,055.46
  5. Step 5: Solve for x
    x = 5,472,699,055.46/90,334.10
  6. Step 6: Final answer
    x = 60,582.87

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1.5x scale

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.