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Finding the Fourth Proportional to 67,718.58, 101,604.60 and 20,975.10

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Solution

The fourth proportional to 67,718.58, 101,604.60 and 20,975.10 is: 31,470.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,718.58 : 101,604.60 = 20,975.10 : x
  2. Step 2: Convert to fraction form
    67,718.58/101,604.60 = 20,975.10/x
  3. Step 3: Cross multiply
    67,718.58x = 101,604.60 × 20,975.10
  4. Step 4: Simplify right side
    67,718.58x = 2,131,166,645.46
  5. Step 5: Solve for x
    x = 2,131,166,645.46/67,718.58
  6. Step 6: Final answer
    x = 31,470.93

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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.