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Finding the Fourth Proportional to 67,486.56, 101,239.52 and 20,743.36

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Solution

The fourth proportional to 67,486.56, 101,239.52 and 20,743.36 is: 31,118.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,486.56 : 101,239.52 = 20,743.36 : x
  2. Step 2: Convert to fraction form
    67,486.56/101,239.52 = 20,743.36/x
  3. Step 3: Cross multiply
    67,486.56x = 101,239.52 × 20,743.36
  4. Step 4: Simplify right side
    67,486.56x = 2,100,047,809.59
  5. Step 5: Solve for x
    x = 2,100,047,809.59/67,486.56
  6. Step 6: Final answer
    x = 31,118.02

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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.