Home / 81,171.89-121,757.43-22,007.47

Finding the Fourth Proportional to 81,171.89, 121,757.43 and 22,007.47

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Solution

The fourth proportional to 81,171.89, 121,757.43 and 22,007.47 is: 33,011.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,171.89 : 121,757.43 = 22,007.47 : x
  2. Step 2: Convert to fraction form
    81,171.89/121,757.43 = 22,007.47/x
  3. Step 3: Cross multiply
    81,171.89x = 121,757.43 × 22,007.47
  4. Step 4: Simplify right side
    81,171.89x = 2,679,572,988.00
  5. Step 5: Solve for x
    x = 2,679,572,988.00/81,171.89
  6. Step 6: Final answer
    x = 33,011.10

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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.