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Finding the Fourth Proportional to 40,964.40, 61,331.40 and 36,817.20

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Solution

The fourth proportional to 40,964.40, 61,331.40 and 36,817.20 is: 55,122.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,964.40 : 61,331.40 = 36,817.20 : x
  2. Step 2: Convert to fraction form
    40,964.40/61,331.40 = 36,817.20/x
  3. Step 3: Cross multiply
    40,964.40x = 61,331.40 × 36,817.20
  4. Step 4: Simplify right side
    40,964.40x = 2,258,050,420.08
  5. Step 5: Solve for x
    x = 2,258,050,420.08/40,964.40
  6. Step 6: Final answer
    x = 55,122.26

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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.