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Finding the Fourth Proportional to 36,643.44, 54,956.88 and 21,856.56

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Solution

The fourth proportional to 36,643.44, 54,956.88 and 21,856.56 is: 32,779.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,643.44 : 54,956.88 = 21,856.56 : x
  2. Step 2: Convert to fraction form
    36,643.44/54,956.88 = 21,856.56/x
  3. Step 3: Cross multiply
    36,643.44x = 54,956.88 × 21,856.56
  4. Step 4: Simplify right side
    36,643.44x = 1,201,168,345.13
  5. Step 5: Solve for x
    x = 1,201,168,345.13/36,643.44
  6. Step 6: Final answer
    x = 32,779.90

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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.