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Finding the Fourth Proportional to 60,638.40, 90,919.49 and 18,504.50

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Solution

The fourth proportional to 60,638.40, 90,919.49 and 18,504.50 is: 27,745.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,638.40 : 90,919.49 = 18,504.50 : x
  2. Step 2: Convert to fraction form
    60,638.40/90,919.49 = 18,504.50/x
  3. Step 3: Cross multiply
    60,638.40x = 90,919.49 × 18,504.50
  4. Step 4: Simplify right side
    60,638.40x = 1,682,419,155.59
  5. Step 5: Solve for x
    x = 1,682,419,155.59/60,638.40
  6. Step 6: Final answer
    x = 27,745.11

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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.