Home / 66,776.11-100,126.72-45,739.90

Finding the Fourth Proportional to 66,776.11, 100,126.72 and 45,739.90

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Solution

The fourth proportional to 66,776.11, 100,126.72 and 45,739.90 is: 68,584.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,776.11 : 100,126.72 = 45,739.90 : x
  2. Step 2: Convert to fraction form
    66,776.11/100,126.72 = 45,739.90/x
  3. Step 3: Cross multiply
    66,776.11x = 100,126.72 × 45,739.90
  4. Step 4: Simplify right side
    66,776.11x = 4,579,786,160.13
  5. Step 5: Solve for x
    x = 4,579,786,160.13/66,776.11
  6. Step 6: Final answer
    x = 68,584.20

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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.