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Finding the Fourth Proportional to 81,197.40, 121,796.10 and 22,040.40

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Solution

The fourth proportional to 81,197.40, 121,796.10 and 22,040.40 is: 33,060.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,197.40 : 121,796.10 = 22,040.40 : x
  2. Step 2: Convert to fraction form
    81,197.40/121,796.10 = 22,040.40/x
  3. Step 3: Cross multiply
    81,197.40x = 121,796.10 × 22,040.40
  4. Step 4: Simplify right side
    81,197.40x = 2,684,434,762.44
  5. Step 5: Solve for x
    x = 2,684,434,762.44/81,197.40
  6. Step 6: Final answer
    x = 33,060.60

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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.