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Finding the Fourth Proportional to 81,207.80, 121,809.65 and 22,041.93

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Solution

The fourth proportional to 81,207.80, 121,809.65 and 22,041.93 is: 33,062.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,207.80 : 121,809.65 = 22,041.93 : x
  2. Step 2: Convert to fraction form
    81,207.80/121,809.65 = 22,041.93/x
  3. Step 3: Cross multiply
    81,207.80x = 121,809.65 × 22,041.93
  4. Step 4: Simplify right side
    81,207.80x = 2,684,919,668.41
  5. Step 5: Solve for x
    x = 2,684,919,668.41/81,207.80
  6. Step 6: Final answer
    x = 33,062.34

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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.