Home / 86,929.20-130,401-27,773.28

Finding the Fourth Proportional to 86,929.20, 130,401 and 27,773.28

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Solution

The fourth proportional to 86,929.20, 130,401 and 27,773.28 is: 41,662.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,929.20 : 130,401 = 27,773.28 : x
  2. Step 2: Convert to fraction form
    86,929.20/130,401 = 27,773.28/x
  3. Step 3: Cross multiply
    86,929.20x = 130,401 × 27,773.28
  4. Step 4: Simplify right side
    86,929.20x = 3,621,663,485.28
  5. Step 5: Solve for x
    x = 3,621,663,485.28/86,929.20
  6. Step 6: Final answer
    x = 41,662.22

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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.