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Finding the Fourth Proportional to 60,480.60, 90,720.90 and 18,360.60

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Solution

The fourth proportional to 60,480.60, 90,720.90 and 18,360.60 is: 27,540.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,480.60 : 90,720.90 = 18,360.60 : x
  2. Step 2: Convert to fraction form
    60,480.60/90,720.90 = 18,360.60/x
  3. Step 3: Cross multiply
    60,480.60x = 90,720.90 × 18,360.60
  4. Step 4: Simplify right side
    60,480.60x = 1,665,690,156.54
  5. Step 5: Solve for x
    x = 1,665,690,156.54/60,480.60
  6. Step 6: Final answer
    x = 27,540.90

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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.