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Finding the Fourth Proportional to 81,173.81, 121,760.42 and 22,009.32

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Solution

The fourth proportional to 81,173.81, 121,760.42 and 22,009.32 is: 33,013.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,173.81 : 121,760.42 = 22,009.32 : x
  2. Step 2: Convert to fraction form
    81,173.81/121,760.42 = 22,009.32/x
  3. Step 3: Cross multiply
    81,173.81x = 121,760.42 × 22,009.32
  4. Step 4: Simplify right side
    81,173.81x = 2,679,863,937.07
  5. Step 5: Solve for x
    x = 2,679,863,937.07/81,173.81
  6. Step 6: Final answer
    x = 33,013.90

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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.