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Finding the Fourth Proportional to 86,628.84, 129,942.48 and 27,462.98

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Solution

The fourth proportional to 86,628.84, 129,942.48 and 27,462.98 is: 41,194.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,628.84 : 129,942.48 = 27,462.98 : x
  2. Step 2: Convert to fraction form
    86,628.84/129,942.48 = 27,462.98/x
  3. Step 3: Cross multiply
    86,628.84x = 129,942.48 × 27,462.98
  4. Step 4: Simplify right side
    86,628.84x = 3,568,607,729.39
  5. Step 5: Solve for x
    x = 3,568,607,729.39/86,628.84
  6. Step 6: Final answer
    x = 41,194.22

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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.