Home / 66,723.66-100,100.07-19,972.86

Finding the Fourth Proportional to 66,723.66, 100,100.07 and 19,972.86

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Solution

The fourth proportional to 66,723.66, 100,100.07 and 19,972.86 is: 29,963.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,723.66 : 100,100.07 = 19,972.86 : x
  2. Step 2: Convert to fraction form
    66,723.66/100,100.07 = 19,972.86/x
  3. Step 3: Cross multiply
    66,723.66x = 100,100.07 × 19,972.86
  4. Step 4: Simplify right side
    66,723.66x = 1,999,284,684.10
  5. Step 5: Solve for x
    x = 1,999,284,684.10/66,723.66
  6. Step 6: Final answer
    x = 29,963.65

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1.5x scale

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.