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Finding the Fourth Proportional to 67,142.92, 100,699.98 and 27,689.80

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Solution

The fourth proportional to 67,142.92, 100,699.98 and 27,689.80 is: 41,528.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,142.92 : 100,699.98 = 27,689.80 : x
  2. Step 2: Convert to fraction form
    67,142.92/100,699.98 = 27,689.80/x
  3. Step 3: Cross multiply
    67,142.92x = 100,699.98 × 27,689.80
  4. Step 4: Simplify right side
    67,142.92x = 2,788,362,306.20
  5. Step 5: Solve for x
    x = 2,788,362,306.20/67,142.92
  6. Step 6: Final answer
    x = 41,528.76

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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.