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Finding the Fourth Proportional to 81,074.66, 121,614.73 and 21,910.85

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Solution

The fourth proportional to 81,074.66, 121,614.73 and 21,910.85 is: 32,867.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,074.66 : 121,614.73 = 21,910.85 : x
  2. Step 2: Convert to fraction form
    81,074.66/121,614.73 = 21,910.85/x
  3. Step 3: Cross multiply
    81,074.66x = 121,614.73 × 21,910.85
  4. Step 4: Simplify right side
    81,074.66x = 2,664,681,389.19
  5. Step 5: Solve for x
    x = 2,664,681,389.19/81,074.66
  6. Step 6: Final answer
    x = 32,867.01

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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.