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Finding the Fourth Proportional to 73,896.96, 110,820.24 and 21,292.32

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Solution

The fourth proportional to 73,896.96, 110,820.24 and 21,292.32 is: 31,931.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,896.96 : 110,820.24 = 21,292.32 : x
  2. Step 2: Convert to fraction form
    73,896.96/110,820.24 = 21,292.32/x
  3. Step 3: Cross multiply
    73,896.96x = 110,820.24 × 21,292.32
  4. Step 4: Simplify right side
    73,896.96x = 2,359,620,012.56
  5. Step 5: Solve for x
    x = 2,359,620,012.56/73,896.96
  6. Step 6: Final answer
    x = 31,931.22

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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.