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Finding the Fourth Proportional to 86,620.60, 129,832.26 and 36,669.52

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Solution

The fourth proportional to 86,620.60, 129,832.26 and 36,669.52 is: 54,962.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,620.60 : 129,832.26 = 36,669.52 : x
  2. Step 2: Convert to fraction form
    86,620.60/129,832.26 = 36,669.52/x
  3. Step 3: Cross multiply
    86,620.60x = 129,832.26 × 36,669.52
  4. Step 4: Simplify right side
    86,620.60x = 4,760,886,654.72
  5. Step 5: Solve for x
    x = 4,760,886,654.72/86,620.60
  6. Step 6: Final answer
    x = 54,962.52

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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.