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Finding the Fourth Proportional to 86,131.93, 129,197.90 and 26,972.22

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Solution

The fourth proportional to 86,131.93, 129,197.90 and 26,972.22 is: 40,458.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,131.93 : 129,197.90 = 26,972.22 : x
  2. Step 2: Convert to fraction form
    86,131.93/129,197.90 = 26,972.22/x
  3. Step 3: Cross multiply
    86,131.93x = 129,197.90 × 26,972.22
  4. Step 4: Simplify right side
    86,131.93x = 3,484,753,765.28
  5. Step 5: Solve for x
    x = 3,484,753,765.28/86,131.93
  6. Step 6: Final answer
    x = 40,458.33

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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.