Home / 86,789.49-130,016.10-49,235.96

Finding the Fourth Proportional to 86,789.49, 130,016.10 and 49,235.96

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Solution

The fourth proportional to 86,789.49, 130,016.10 and 49,235.96 is: 73,758.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,789.49 : 130,016.10 = 49,235.96 : x
  2. Step 2: Convert to fraction form
    86,789.49/130,016.10 = 49,235.96/x
  3. Step 3: Cross multiply
    86,789.49x = 130,016.10 × 49,235.96
  4. Step 4: Simplify right side
    86,789.49x = 6,401,467,824.00
  5. Step 5: Solve for x
    x = 6,401,467,824.00/86,789.49
  6. Step 6: Final answer
    x = 73,758.56

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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.