Home / 57,431.25-86,146.88-17,991.44

Finding the Fourth Proportional to 57,431.25, 86,146.88 and 17,991.44

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Solution

The fourth proportional to 57,431.25, 86,146.88 and 17,991.44 is: 26,987.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,431.25 : 86,146.88 = 17,991.44 : x
  2. Step 2: Convert to fraction form
    57,431.25/86,146.88 = 17,991.44/x
  3. Step 3: Cross multiply
    57,431.25x = 86,146.88 × 17,991.44
  4. Step 4: Simplify right side
    57,431.25x = 1,549,906,422.71
  5. Step 5: Solve for x
    x = 1,549,906,422.71/57,431.25
  6. Step 6: Final answer
    x = 26,987.16

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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.