Home / 66,815.52-100,244.16-40,190.56

Finding the Fourth Proportional to 66,815.52, 100,244.16 and 40,190.56

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Solution

The fourth proportional to 66,815.52, 100,244.16 and 40,190.56 is: 60,298.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,815.52 : 100,244.16 = 40,190.56 : x
  2. Step 2: Convert to fraction form
    66,815.52/100,244.16 = 40,190.56/x
  3. Step 3: Cross multiply
    66,815.52x = 100,244.16 × 40,190.56
  4. Step 4: Simplify right side
    66,815.52x = 4,028,868,927.13
  5. Step 5: Solve for x
    x = 4,028,868,927.13/66,815.52
  6. Step 6: Final answer
    x = 60,298.40

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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.