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Finding the Fourth Proportional to 86,717.80, 130,080.30 and 27,551.80

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Solution

The fourth proportional to 86,717.80, 130,080.30 and 27,551.80 is: 41,328.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,717.80 : 130,080.30 = 27,551.80 : x
  2. Step 2: Convert to fraction form
    86,717.80/130,080.30 = 27,551.80/x
  3. Step 3: Cross multiply
    86,717.80x = 130,080.30 × 27,551.80
  4. Step 4: Simplify right side
    86,717.80x = 3,583,946,409.54
  5. Step 5: Solve for x
    x = 3,583,946,409.54/86,717.80
  6. Step 6: Final answer
    x = 41,328.84

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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.