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Finding the Fourth Proportional to 73,820.90, 110,727.48 and 21,228.32

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Solution

The fourth proportional to 73,820.90, 110,727.48 and 21,228.32 is: 31,841.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,820.90 : 110,727.48 = 21,228.32 : x
  2. Step 2: Convert to fraction form
    73,820.90/110,727.48 = 21,228.32/x
  3. Step 3: Cross multiply
    73,820.90x = 110,727.48 × 21,228.32
  4. Step 4: Simplify right side
    73,820.90x = 2,350,558,378.23
  5. Step 5: Solve for x
    x = 2,350,558,378.23/73,820.90
  6. Step 6: Final answer
    x = 31,841.37

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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.