Home / 66,680.20-99,845.34-43,235.56

Finding the Fourth Proportional to 66,680.20, 99,845.34 and 43,235.56

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Solution

The fourth proportional to 66,680.20, 99,845.34 and 43,235.56 is: 64,739.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,680.20 : 99,845.34 = 43,235.56 : x
  2. Step 2: Convert to fraction form
    66,680.20/99,845.34 = 43,235.56/x
  3. Step 3: Cross multiply
    66,680.20x = 99,845.34 × 43,235.56
  4. Step 4: Simplify right side
    66,680.20x = 4,316,869,188.29
  5. Step 5: Solve for x
    x = 4,316,869,188.29/66,680.20
  6. Step 6: Final answer
    x = 64,739.90

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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.