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Finding the Fourth Proportional to 52,757.44, 79,136.16 and 21,580

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Solution

The fourth proportional to 52,757.44, 79,136.16 and 21,580 is: 32,370.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,757.44 : 79,136.16 = 21,580 : x
  2. Step 2: Convert to fraction form
    52,757.44/79,136.16 = 21,580/x
  3. Step 3: Cross multiply
    52,757.44x = 79,136.16 × 21,580
  4. Step 4: Simplify right side
    52,757.44x = 1,707,758,332.80
  5. Step 5: Solve for x
    x = 1,707,758,332.80/52,757.44
  6. Step 6: Final answer
    x = 32,370.00

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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.