Home / 90,333.85-135,446.05-40,404.64

Finding the Fourth Proportional to 90,333.85, 135,446.05 and 40,404.64

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Solution

The fourth proportional to 90,333.85, 135,446.05 and 40,404.64 is: 60,582.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,333.85 : 135,446.05 = 40,404.64 : x
  2. Step 2: Convert to fraction form
    90,333.85/135,446.05 = 40,404.64/x
  3. Step 3: Cross multiply
    90,333.85x = 135,446.05 × 40,404.64
  4. Step 4: Simplify right side
    90,333.85x = 5,472,648,889.67
  5. Step 5: Solve for x
    x = 5,472,648,889.67/90,333.85
  6. Step 6: Final answer
    x = 60,582.48

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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.