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Finding the Fourth Proportional to 86,687.92, 130,018.60 and 27,515.88

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Solution

The fourth proportional to 86,687.92, 130,018.60 and 27,515.88 is: 41,269.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,687.92 : 130,018.60 = 27,515.88 : x
  2. Step 2: Convert to fraction form
    86,687.92/130,018.60 = 27,515.88/x
  3. Step 3: Cross multiply
    86,687.92x = 130,018.60 × 27,515.88
  4. Step 4: Simplify right side
    86,687.92x = 3,577,576,195.37
  5. Step 5: Solve for x
    x = 3,577,576,195.37/86,687.92
  6. Step 6: Final answer
    x = 41,269.60

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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.