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Finding the Fourth Proportional to 86,967.73, 130,463.89 and 27,789.56

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Solution

The fourth proportional to 86,967.73, 130,463.89 and 27,789.56 is: 41,688.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,967.73 : 130,463.89 = 27,789.56 : x
  2. Step 2: Convert to fraction form
    86,967.73/130,463.89 = 27,789.56/x
  3. Step 3: Cross multiply
    86,967.73x = 130,463.89 × 27,789.56
  4. Step 4: Simplify right side
    86,967.73x = 3,625,533,577.66
  5. Step 5: Solve for x
    x = 3,625,533,577.66/86,967.73
  6. Step 6: Final answer
    x = 41,688.26

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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.