Home / 86,687.49-130,021.92-58,786.64

Finding the Fourth Proportional to 86,687.49, 130,021.92 and 58,786.64

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Solution

The fourth proportional to 86,687.49, 130,021.92 and 58,786.64 is: 88,173.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,687.49 : 130,021.92 = 58,786.64 : x
  2. Step 2: Convert to fraction form
    86,687.49/130,021.92 = 58,786.64/x
  3. Step 3: Cross multiply
    86,687.49x = 130,021.92 × 58,786.64
  4. Step 4: Simplify right side
    86,687.49x = 7,643,551,153.04
  5. Step 5: Solve for x
    x = 7,643,551,153.04/86,687.49
  6. Step 6: Final answer
    x = 88,173.64

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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.