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Finding the Fourth Proportional to 67,811.70, 101,717.55 and 17,891.70

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Solution

The fourth proportional to 67,811.70, 101,717.55 and 17,891.70 is: 26,837.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,811.70 : 101,717.55 = 17,891.70 : x
  2. Step 2: Convert to fraction form
    67,811.70/101,717.55 = 17,891.70/x
  3. Step 3: Cross multiply
    67,811.70x = 101,717.55 × 17,891.70
  4. Step 4: Simplify right side
    67,811.70x = 1,819,899,889.34
  5. Step 5: Solve for x
    x = 1,819,899,889.34/67,811.70
  6. Step 6: Final answer
    x = 26,837.55

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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.