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Finding the Fourth Proportional to 49,690.75, 74,536.17 and 12,754.75

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Solution

The fourth proportional to 49,690.75, 74,536.17 and 12,754.75 is: 19,132.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,690.75 : 74,536.17 = 12,754.75 : x
  2. Step 2: Convert to fraction form
    49,690.75/74,536.17 = 12,754.75/x
  3. Step 3: Cross multiply
    49,690.75x = 74,536.17 × 12,754.75
  4. Step 4: Simplify right side
    49,690.75x = 950,690,214.31
  5. Step 5: Solve for x
    x = 950,690,214.31/49,690.75
  6. Step 6: Final answer
    x = 19,132.14

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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.