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Finding the Fourth Proportional to 67,910.73, 101,866.78 and 20,526.20

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Solution

The fourth proportional to 67,910.73, 101,866.78 and 20,526.20 is: 30,789.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,910.73 : 101,866.78 = 20,526.20 : x
  2. Step 2: Convert to fraction form
    67,910.73/101,866.78 = 20,526.20/x
  3. Step 3: Cross multiply
    67,910.73x = 101,866.78 × 20,526.20
  4. Step 4: Simplify right side
    67,910.73x = 2,090,937,899.64
  5. Step 5: Solve for x
    x = 2,090,937,899.64/67,910.73
  6. Step 6: Final answer
    x = 30,789.51

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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.