Home / 81,748.62-122,628.12-21,776.10

Finding the Fourth Proportional to 81,748.62, 122,628.12 and 21,776.10

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Solution

The fourth proportional to 81,748.62, 122,628.12 and 21,776.10 is: 32,665.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,748.62 : 122,628.12 = 21,776.10 : x
  2. Step 2: Convert to fraction form
    81,748.62/122,628.12 = 21,776.10/x
  3. Step 3: Cross multiply
    81,748.62x = 122,628.12 × 21,776.10
  4. Step 4: Simplify right side
    81,748.62x = 2,670,362,203.93
  5. Step 5: Solve for x
    x = 2,670,362,203.93/81,748.62
  6. Step 6: Final answer
    x = 32,665.53

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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.