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Finding the Fourth Proportional to 83,993.34, 125,990.26 and 57,618.12

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Solution

The fourth proportional to 83,993.34, 125,990.26 and 57,618.12 is: 86,427.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,993.34 : 125,990.26 = 57,618.12 : x
  2. Step 2: Convert to fraction form
    83,993.34/125,990.26 = 57,618.12/x
  3. Step 3: Cross multiply
    83,993.34x = 125,990.26 × 57,618.12
  4. Step 4: Simplify right side
    83,993.34x = 7,259,321,919.51
  5. Step 5: Solve for x
    x = 7,259,321,919.51/83,993.34
  6. Step 6: Final answer
    x = 86,427.35

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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.