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Finding the Fourth Proportional to 81,161.34, 121,764.46 and 33,798.72

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Solution

The fourth proportional to 81,161.34, 121,764.46 and 33,798.72 is: 50,707.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,161.34 : 121,764.46 = 33,798.72 : x
  2. Step 2: Convert to fraction form
    81,161.34/121,764.46 = 33,798.72/x
  3. Step 3: Cross multiply
    81,161.34x = 121,764.46 × 33,798.72
  4. Step 4: Simplify right side
    81,161.34x = 4,115,482,889.49
  5. Step 5: Solve for x
    x = 4,115,482,889.49/81,161.34
  6. Step 6: Final answer
    x = 50,707.43

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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.