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Finding the Fourth Proportional to 86,544.34, 129,832.31 and 39,796

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Solution

The fourth proportional to 86,544.34, 129,832.31 and 39,796 is: 59,701.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,544.34 : 129,832.31 = 39,796 : x
  2. Step 2: Convert to fraction form
    86,544.34/129,832.31 = 39,796/x
  3. Step 3: Cross multiply
    86,544.34x = 129,832.31 × 39,796
  4. Step 4: Simplify right side
    86,544.34x = 5,166,806,608.76
  5. Step 5: Solve for x
    x = 5,166,806,608.76/86,544.34
  6. Step 6: Final answer
    x = 59,701.27

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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.