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Finding the Fourth Proportional to 81,969.84, 122,954.90 and 22,805.55

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Solution

The fourth proportional to 81,969.84, 122,954.90 and 22,805.55 is: 34,208.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,969.84 : 122,954.90 = 22,805.55 : x
  2. Step 2: Convert to fraction form
    81,969.84/122,954.90 = 22,805.55/x
  3. Step 3: Cross multiply
    81,969.84x = 122,954.90 × 22,805.55
  4. Step 4: Simplify right side
    81,969.84x = 2,804,054,005.67
  5. Step 5: Solve for x
    x = 2,804,054,005.67/81,969.84
  6. Step 6: Final answer
    x = 34,208.36

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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.