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Finding the Fourth Proportional to 40,211.20, 60,309.60 and 25,393.60

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Solution

The fourth proportional to 40,211.20, 60,309.60 and 25,393.60 is: 38,085.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,211.20 : 60,309.60 = 25,393.60 : x
  2. Step 2: Convert to fraction form
    40,211.20/60,309.60 = 25,393.60/x
  3. Step 3: Cross multiply
    40,211.20x = 60,309.60 × 25,393.60
  4. Step 4: Simplify right side
    40,211.20x = 1,531,477,858.56
  5. Step 5: Solve for x
    x = 1,531,477,858.56/40,211.20
  6. Step 6: Final answer
    x = 38,085.85

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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.