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Finding the Fourth Proportional to 55,147.80, 82,722.20 and 15,704.90

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Solution

The fourth proportional to 55,147.80, 82,722.20 and 15,704.90 is: 23,557.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,147.80 : 82,722.20 = 15,704.90 : x
  2. Step 2: Convert to fraction form
    55,147.80/82,722.20 = 15,704.90/x
  3. Step 3: Cross multiply
    55,147.80x = 82,722.20 × 15,704.90
  4. Step 4: Simplify right side
    55,147.80x = 1,299,143,386.64
  5. Step 5: Solve for x
    x = 1,299,143,386.64/55,147.80
  6. Step 6: Final answer
    x = 23,557.48

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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.