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Finding the Fourth Proportional to 81,805.48, 122,710.96 and 22,636.20

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Solution

The fourth proportional to 81,805.48, 122,710.96 and 22,636.20 is: 33,955.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,805.48 : 122,710.96 = 22,636.20 : x
  2. Step 2: Convert to fraction form
    81,805.48/122,710.96 = 22,636.20/x
  3. Step 3: Cross multiply
    81,805.48x = 122,710.96 × 22,636.20
  4. Step 4: Simplify right side
    81,805.48x = 2,777,709,832.75
  5. Step 5: Solve for x
    x = 2,777,709,832.75/81,805.48
  6. Step 6: Final answer
    x = 33,955.06

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1.5x scale

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.