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Finding the Fourth Proportional to 52,757.80, 79,136.70 and 15,821.80

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Solution

The fourth proportional to 52,757.80, 79,136.70 and 15,821.80 is: 23,732.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,757.80 : 79,136.70 = 15,821.80 : x
  2. Step 2: Convert to fraction form
    52,757.80/79,136.70 = 15,821.80/x
  3. Step 3: Cross multiply
    52,757.80x = 79,136.70 × 15,821.80
  4. Step 4: Simplify right side
    52,757.80x = 1,252,085,040.06
  5. Step 5: Solve for x
    x = 1,252,085,040.06/52,757.80
  6. Step 6: Final answer
    x = 23,732.70

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1.5x scale

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.