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Finding the Fourth Proportional to 81,569.64, 122,340.72 and 22,391.60

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Solution

The fourth proportional to 81,569.64, 122,340.72 and 22,391.60 is: 33,583.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,569.64 : 122,340.72 = 22,391.60 : x
  2. Step 2: Convert to fraction form
    81,569.64/122,340.72 = 22,391.60/x
  3. Step 3: Cross multiply
    81,569.64x = 122,340.72 × 22,391.60
  4. Step 4: Simplify right side
    81,569.64x = 2,739,404,465.95
  5. Step 5: Solve for x
    x = 2,739,404,465.95/81,569.64
  6. Step 6: Final answer
    x = 33,583.63

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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.