Home / 54,021.36-74,549.34-30,147.78

Finding the Fourth Proportional to 54,021.36, 74,549.34 and 30,147.78

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Solution

The fourth proportional to 54,021.36, 74,549.34 and 30,147.78 is: 41,603.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,021.36 : 74,549.34 = 30,147.78 : x
  2. Step 2: Convert to fraction form
    54,021.36/74,549.34 = 30,147.78/x
  3. Step 3: Cross multiply
    54,021.36x = 74,549.34 × 30,147.78
  4. Step 4: Simplify right side
    54,021.36x = 2,247,497,101.47
  5. Step 5: Solve for x
    x = 2,247,497,101.47/54,021.36
  6. Step 6: Final answer
    x = 41,603.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.