Home / 66,380.78-99,571.98-19,634.60

Finding the Fourth Proportional to 66,380.78, 99,571.98 and 19,634.60

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Solution

The fourth proportional to 66,380.78, 99,571.98 and 19,634.60 is: 29,452.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,380.78 : 99,571.98 = 19,634.60 : x
  2. Step 2: Convert to fraction form
    66,380.78/99,571.98 = 19,634.60/x
  3. Step 3: Cross multiply
    66,380.78x = 99,571.98 × 19,634.60
  4. Step 4: Simplify right side
    66,380.78x = 1,955,055,998.51
  5. Step 5: Solve for x
    x = 1,955,055,998.51/66,380.78
  6. Step 6: Final answer
    x = 29,452.14

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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.