Home / 66,405.38-99,627.57-19,659.47

Finding the Fourth Proportional to 66,405.38, 99,627.57 and 19,659.47

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Solution

The fourth proportional to 66,405.38, 99,627.57 and 19,659.47 is: 29,494.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,405.38 : 99,627.57 = 19,659.47 : x
  2. Step 2: Convert to fraction form
    66,405.38/99,627.57 = 19,659.47/x
  3. Step 3: Cross multiply
    66,405.38x = 99,627.57 × 19,659.47
  4. Step 4: Simplify right side
    66,405.38x = 1,958,624,725.45
  5. Step 5: Solve for x
    x = 1,958,624,725.45/66,405.38
  6. Step 6: Final answer
    x = 29,494.97

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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.