Home / 80,220.46-120,215.88-45,086.31

Finding the Fourth Proportional to 80,220.46, 120,215.88 and 45,086.31

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Solution

The fourth proportional to 80,220.46, 120,215.88 and 45,086.31 is: 67,564.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,220.46 : 120,215.88 = 45,086.31 : x
  2. Step 2: Convert to fraction form
    80,220.46/120,215.88 = 45,086.31/x
  3. Step 3: Cross multiply
    80,220.46x = 120,215.88 × 45,086.31
  4. Step 4: Simplify right side
    80,220.46x = 5,420,090,432.60
  5. Step 5: Solve for x
    x = 5,420,090,432.60/80,220.46
  6. Step 6: Final answer
    x = 67,564.94

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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.