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Finding the Fourth Proportional to 71,663.44, 98,669.64 and 65,020.42

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Solution

The fourth proportional to 71,663.44, 98,669.64 and 65,020.42 is: 89,523.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,663.44 : 98,669.64 = 65,020.42 : x
  2. Step 2: Convert to fraction form
    71,663.44/98,669.64 = 65,020.42/x
  3. Step 3: Cross multiply
    71,663.44x = 98,669.64 × 65,020.42
  4. Step 4: Simplify right side
    71,663.44x = 6,415,541,434.05
  5. Step 5: Solve for x
    x = 6,415,541,434.05/71,663.44
  6. Step 6: Final answer
    x = 89,523.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.