Home / 66,455.91-99,700.26-19,708.79

Finding the Fourth Proportional to 66,455.91, 99,700.26 and 19,708.79

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Solution

The fourth proportional to 66,455.91, 99,700.26 and 19,708.79 is: 29,568.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,455.91 : 99,700.26 = 19,708.79 : x
  2. Step 2: Convert to fraction form
    66,455.91/99,700.26 = 19,708.79/x
  3. Step 3: Cross multiply
    66,455.91x = 99,700.26 × 19,708.79
  4. Step 4: Simplify right side
    66,455.91x = 1,964,970,988.78
  5. Step 5: Solve for x
    x = 1,964,970,988.78/66,455.91
  6. Step 6: Final answer
    x = 29,568.04

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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.