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Finding the Fourth Proportional to 86,661.60, 119,474.40 and 54,814.56

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Solution

The fourth proportional to 86,661.60, 119,474.40 and 54,814.56 is: 75,569.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,661.60 : 119,474.40 = 54,814.56 : x
  2. Step 2: Convert to fraction form
    86,661.60/119,474.40 = 54,814.56/x
  3. Step 3: Cross multiply
    86,661.60x = 119,474.40 × 54,814.56
  4. Step 4: Simplify right side
    86,661.60x = 6,548,936,667.26
  5. Step 5: Solve for x
    x = 6,548,936,667.26/86,661.60
  6. Step 6: Final answer
    x = 75,569.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.