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Finding the Fourth Proportional to 67,666.38, 101,504.43 and 20,913.18

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Solution

The fourth proportional to 67,666.38, 101,504.43 and 20,913.18 is: 31,371.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,666.38 : 101,504.43 = 20,913.18 : x
  2. Step 2: Convert to fraction form
    67,666.38/101,504.43 = 20,913.18/x
  3. Step 3: Cross multiply
    67,666.38x = 101,504.43 × 20,913.18
  4. Step 4: Simplify right side
    67,666.38x = 2,122,780,415.39
  5. Step 5: Solve for x
    x = 2,122,780,415.39/67,666.38
  6. Step 6: Final answer
    x = 31,371.27

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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.