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Finding the Fourth Proportional to 67,987.25, 101,980.92 and 25,857.63

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Solution

The fourth proportional to 67,987.25, 101,980.92 and 25,857.63 is: 38,786.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,987.25 : 101,980.92 = 25,857.63 : x
  2. Step 2: Convert to fraction form
    67,987.25/101,980.92 = 25,857.63/x
  3. Step 3: Cross multiply
    67,987.25x = 101,980.92 × 25,857.63
  4. Step 4: Simplify right side
    67,987.25x = 2,636,984,993.39
  5. Step 5: Solve for x
    x = 2,636,984,993.39/67,987.25
  6. Step 6: Final answer
    x = 38,786.46

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Double scale
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Similar ratio
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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.