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Finding the Fourth Proportional to 86,765.44, 130,251.60 and 51,721.60

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Solution

The fourth proportional to 86,765.44, 130,251.60 and 51,721.60 is: 77,644.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,765.44 : 130,251.60 = 51,721.60 : x
  2. Step 2: Convert to fraction form
    86,765.44/130,251.60 = 51,721.60/x
  3. Step 3: Cross multiply
    86,765.44x = 130,251.60 × 51,721.60
  4. Step 4: Simplify right side
    86,765.44x = 6,736,821,154.56
  5. Step 5: Solve for x
    x = 6,736,821,154.56/86,765.44
  6. Step 6: Final answer
    x = 77,644.06

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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.