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Finding the Fourth Proportional to 54,900.78, 82,351.23 and 13,347.78

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Solution

The fourth proportional to 54,900.78, 82,351.23 and 13,347.78 is: 20,021.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,900.78 : 82,351.23 = 13,347.78 : x
  2. Step 2: Convert to fraction form
    54,900.78/82,351.23 = 13,347.78/x
  3. Step 3: Cross multiply
    54,900.78x = 82,351.23 × 13,347.78
  4. Step 4: Simplify right side
    54,900.78x = 1,099,206,100.77
  5. Step 5: Solve for x
    x = 1,099,206,100.77/54,900.78
  6. Step 6: Final answer
    x = 20,021.68

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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.