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Finding the Fourth Proportional to 40,958.40, 61,322.40 and 36,811.20

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Solution

The fourth proportional to 40,958.40, 61,322.40 and 36,811.20 is: 55,113.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,958.40 : 61,322.40 = 36,811.20 : x
  2. Step 2: Convert to fraction form
    40,958.40/61,322.40 = 36,811.20/x
  3. Step 3: Cross multiply
    40,958.40x = 61,322.40 × 36,811.20
  4. Step 4: Simplify right side
    40,958.40x = 2,257,351,130.88
  5. Step 5: Solve for x
    x = 2,257,351,130.88/40,958.40
  6. Step 6: Final answer
    x = 55,113.26

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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.