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Finding the Fourth Proportional to 64,805.71, 97,209.03 and 20,436.04

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Solution

The fourth proportional to 64,805.71, 97,209.03 and 20,436.04 is: 30,654.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,805.71 : 97,209.03 = 20,436.04 : x
  2. Step 2: Convert to fraction form
    64,805.71/97,209.03 = 20,436.04/x
  3. Step 3: Cross multiply
    64,805.71x = 97,209.03 × 20,436.04
  4. Step 4: Simplify right side
    64,805.71x = 1,986,567,625.44
  5. Step 5: Solve for x
    x = 1,986,567,625.44/64,805.71
  6. Step 6: Final answer
    x = 30,654.21

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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.