Home / 66,399.39-99,618.57-19,653.48

Finding the Fourth Proportional to 66,399.39, 99,618.57 and 19,653.48

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Solution

The fourth proportional to 66,399.39, 99,618.57 and 19,653.48 is: 29,485.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,399.39 : 99,618.57 = 19,653.48 : x
  2. Step 2: Convert to fraction form
    66,399.39/99,618.57 = 19,653.48/x
  3. Step 3: Cross multiply
    66,399.39x = 99,618.57 × 19,653.48
  4. Step 4: Simplify right side
    66,399.39x = 1,957,851,573.12
  5. Step 5: Solve for x
    x = 1,957,851,573.12/66,399.39
  6. Step 6: Final answer
    x = 29,485.99

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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.