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Finding the Fourth Proportional to 36,404.40, 54,539.40 and 20,775.60

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Solution

The fourth proportional to 36,404.40, 54,539.40 and 20,775.60 is: 31,125.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,404.40 : 54,539.40 = 20,775.60 : x
  2. Step 2: Convert to fraction form
    36,404.40/54,539.40 = 20,775.60/x
  3. Step 3: Cross multiply
    36,404.40x = 54,539.40 × 20,775.60
  4. Step 4: Simplify right side
    36,404.40x = 1,133,088,758.64
  5. Step 5: Solve for x
    x = 1,133,088,758.64/36,404.40
  6. Step 6: Final answer
    x = 31,125.05

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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.