Home / 54,138.78-81,184.88-18,603.68

Finding the Fourth Proportional to 54,138.78, 81,184.88 and 18,603.68

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Solution

The fourth proportional to 54,138.78, 81,184.88 and 18,603.68 is: 27,897.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,138.78 : 81,184.88 = 18,603.68 : x
  2. Step 2: Convert to fraction form
    54,138.78/81,184.88 = 18,603.68/x
  3. Step 3: Cross multiply
    54,138.78x = 81,184.88 × 18,603.68
  4. Step 4: Simplify right side
    54,138.78x = 1,510,337,168.94
  5. Step 5: Solve for x
    x = 1,510,337,168.94/54,138.78
  6. Step 6: Final answer
    x = 27,897.51

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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.