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Finding the Fourth Proportional to 84,620.74, 126,931.11 and 43,096.90

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Solution

The fourth proportional to 84,620.74, 126,931.11 and 43,096.90 is: 64,645.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,620.74 : 126,931.11 = 43,096.90 : x
  2. Step 2: Convert to fraction form
    84,620.74/126,931.11 = 43,096.90/x
  3. Step 3: Cross multiply
    84,620.74x = 126,931.11 × 43,096.90
  4. Step 4: Simplify right side
    84,620.74x = 5,470,337,354.56
  5. Step 5: Solve for x
    x = 5,470,337,354.56/84,620.74
  6. Step 6: Final answer
    x = 64,645.35

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Similar ratio
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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.