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Finding the Fourth Proportional to 86,530.50, 129,809.47 and 36,610.97

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Solution

The fourth proportional to 86,530.50, 129,809.47 and 36,610.97 is: 54,922.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,530.50 : 129,809.47 = 36,610.97 : x
  2. Step 2: Convert to fraction form
    86,530.50/129,809.47 = 36,610.97/x
  3. Step 3: Cross multiply
    86,530.50x = 129,809.47 × 36,610.97
  4. Step 4: Simplify right side
    86,530.50x = 4,752,450,844.88
  5. Step 5: Solve for x
    x = 4,752,450,844.88/86,530.50
  6. Step 6: Final answer
    x = 54,922.26

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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.