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Finding the Fourth Proportional to 67,992.40, 101,988.68 and 21,245.52

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Solution

The fourth proportional to 67,992.40, 101,988.68 and 21,245.52 is: 31,868.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,992.40 : 101,988.68 = 21,245.52 : x
  2. Step 2: Convert to fraction form
    67,992.40/101,988.68 = 21,245.52/x
  3. Step 3: Cross multiply
    67,992.40x = 101,988.68 × 21,245.52
  4. Step 4: Simplify right side
    67,992.40x = 2,166,802,540.71
  5. Step 5: Solve for x
    x = 2,166,802,540.71/67,992.40
  6. Step 6: Final answer
    x = 31,868.30

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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.