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Finding the Fourth Proportional to 67,662.23, 101,503.07 and 20,918.75

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Solution

The fourth proportional to 67,662.23, 101,503.07 and 20,918.75 is: 31,381.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,662.23 : 101,503.07 = 20,918.75 : x
  2. Step 2: Convert to fraction form
    67,662.23/101,503.07 = 20,918.75/x
  3. Step 3: Cross multiply
    67,662.23x = 101,503.07 × 20,918.75
  4. Step 4: Simplify right side
    67,662.23x = 2,123,317,240.97
  5. Step 5: Solve for x
    x = 2,123,317,240.97/67,662.23
  6. Step 6: Final answer
    x = 31,381.13

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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.