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Finding the Fourth Proportional to 65,473.31, 98,223.64 and 21,104.55

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Solution

The fourth proportional to 65,473.31, 98,223.64 and 21,104.55 is: 31,661.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,473.31 : 98,223.64 = 21,104.55 : x
  2. Step 2: Convert to fraction form
    65,473.31/98,223.64 = 21,104.55/x
  3. Step 3: Cross multiply
    65,473.31x = 98,223.64 × 21,104.55
  4. Step 4: Simplify right side
    65,473.31x = 2,072,965,668.80
  5. Step 5: Solve for x
    x = 2,072,965,668.80/65,473.31
  6. Step 6: Final answer
    x = 31,661.23

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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.