Home / 66,612.75-99,990.26-28,680.79

Finding the Fourth Proportional to 66,612.75, 99,990.26 and 28,680.79

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Solution

The fourth proportional to 66,612.75, 99,990.26 and 28,680.79 is: 43,051.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,612.75 : 99,990.26 = 28,680.79 : x
  2. Step 2: Convert to fraction form
    66,612.75/99,990.26 = 28,680.79/x
  3. Step 3: Cross multiply
    66,612.75x = 99,990.26 × 28,680.79
  4. Step 4: Simplify right side
    66,612.75x = 2,867,799,738.24
  5. Step 5: Solve for x
    x = 2,867,799,738.24/66,612.75
  6. Step 6: Final answer
    x = 43,051.81

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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.