Home / 90,331.20-135,496.80-23,781.60

Finding the Fourth Proportional to 90,331.20, 135,496.80 and 23,781.60

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Solution

The fourth proportional to 90,331.20, 135,496.80 and 23,781.60 is: 35,672.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,331.20 : 135,496.80 = 23,781.60 : x
  2. Step 2: Convert to fraction form
    90,331.20/135,496.80 = 23,781.60/x
  3. Step 3: Cross multiply
    90,331.20x = 135,496.80 × 23,781.60
  4. Step 4: Simplify right side
    90,331.20x = 3,222,330,698.88
  5. Step 5: Solve for x
    x = 3,222,330,698.88/90,331.20
  6. Step 6: Final answer
    x = 35,672.40

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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.