Home / 66,481.56-99,705.33-19,723.50

Finding the Fourth Proportional to 66,481.56, 99,705.33 and 19,723.50

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Solution

The fourth proportional to 66,481.56, 99,705.33 and 19,723.50 is: 29,580.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,481.56 : 99,705.33 = 19,723.50 : x
  2. Step 2: Convert to fraction form
    66,481.56/99,705.33 = 19,723.50/x
  3. Step 3: Cross multiply
    66,481.56x = 99,705.33 × 19,723.50
  4. Step 4: Simplify right side
    66,481.56x = 1,966,538,076.26
  5. Step 5: Solve for x
    x = 1,966,538,076.26/66,481.56
  6. Step 6: Final answer
    x = 29,580.20

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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.