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Finding the Fourth Proportional to 67,012.40, 100,511.40 and 17,764.40

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Solution

The fourth proportional to 67,012.40, 100,511.40 and 17,764.40 is: 26,644.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,012.40 : 100,511.40 = 17,764.40 : x
  2. Step 2: Convert to fraction form
    67,012.40/100,511.40 = 17,764.40/x
  3. Step 3: Cross multiply
    67,012.40x = 100,511.40 × 17,764.40
  4. Step 4: Simplify right side
    67,012.40x = 1,785,524,714.16
  5. Step 5: Solve for x
    x = 1,785,524,714.16/67,012.40
  6. Step 6: Final answer
    x = 26,644.69

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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.