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Finding the Fourth Proportional to 86,806.88, 130,219.86 and 27,628.69

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Solution

The fourth proportional to 86,806.88, 130,219.86 and 27,628.69 is: 41,446.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,806.88 : 130,219.86 = 27,628.69 : x
  2. Step 2: Convert to fraction form
    86,806.88/130,219.86 = 27,628.69/x
  3. Step 3: Cross multiply
    86,806.88x = 130,219.86 × 27,628.69
  4. Step 4: Simplify right side
    86,806.88x = 3,597,803,492.68
  5. Step 5: Solve for x
    x = 3,597,803,492.68/86,806.88
  6. Step 6: Final answer
    x = 41,446.06

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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.