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Finding the Fourth Proportional to 52,982.66, 79,464.40 and 21,391.40

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Solution

The fourth proportional to 52,982.66, 79,464.40 and 21,391.40 is: 32,083.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,982.66 : 79,464.40 = 21,391.40 : x
  2. Step 2: Convert to fraction form
    52,982.66/79,464.40 = 21,391.40/x
  3. Step 3: Cross multiply
    52,982.66x = 79,464.40 × 21,391.40
  4. Step 4: Simplify right side
    52,982.66x = 1,699,854,766.16
  5. Step 5: Solve for x
    x = 1,699,854,766.16/52,982.66
  6. Step 6: Final answer
    x = 32,083.23

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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.