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Finding the Fourth Proportional to 45,781.20, 68,710.20 and 22,427.60

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Solution

The fourth proportional to 45,781.20, 68,710.20 and 22,427.60 is: 33,660.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,781.20 : 68,710.20 = 22,427.60 : x
  2. Step 2: Convert to fraction form
    45,781.20/68,710.20 = 22,427.60/x
  3. Step 3: Cross multiply
    45,781.20x = 68,710.20 × 22,427.60
  4. Step 4: Simplify right side
    45,781.20x = 1,541,004,881.52
  5. Step 5: Solve for x
    x = 1,541,004,881.52/45,781.20
  6. Step 6: Final answer
    x = 33,660.21

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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.