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Finding the Fourth Proportional to 67,661.66, 101,464.74 and 20,260.05

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Solution

The fourth proportional to 67,661.66, 101,464.74 and 20,260.05 is: 30,381.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,661.66 : 101,464.74 = 20,260.05 : x
  2. Step 2: Convert to fraction form
    67,661.66/101,464.74 = 20,260.05/x
  3. Step 3: Cross multiply
    67,661.66x = 101,464.74 × 20,260.05
  4. Step 4: Simplify right side
    67,661.66x = 2,055,680,705.64
  5. Step 5: Solve for x
    x = 2,055,680,705.64/67,661.66
  6. Step 6: Final answer
    x = 30,381.77

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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.