Home / 66,907.20-100,354.32-40,604.88

Finding the Fourth Proportional to 66,907.20, 100,354.32 and 40,604.88

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Solution

The fourth proportional to 66,907.20, 100,354.32 and 40,604.88 is: 60,903.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,907.20 : 100,354.32 = 40,604.88 : x
  2. Step 2: Convert to fraction form
    66,907.20/100,354.32 = 40,604.88/x
  3. Step 3: Cross multiply
    66,907.20x = 100,354.32 × 40,604.88
  4. Step 4: Simplify right side
    66,907.20x = 4,074,875,121.08
  5. Step 5: Solve for x
    x = 4,074,875,121.08/66,907.20
  6. Step 6: Final answer
    x = 60,903.39

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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.