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Finding the Fourth Proportional to 86,308.96, 129,470.46 and 23,979.46

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Solution

The fourth proportional to 86,308.96, 129,470.46 and 23,979.46 is: 35,971.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,308.96 : 129,470.46 = 23,979.46 : x
  2. Step 2: Convert to fraction form
    86,308.96/129,470.46 = 23,979.46/x
  3. Step 3: Cross multiply
    86,308.96x = 129,470.46 × 23,979.46
  4. Step 4: Simplify right side
    86,308.96x = 3,104,631,716.75
  5. Step 5: Solve for x
    x = 3,104,631,716.75/86,308.96
  6. Step 6: Final answer
    x = 35,971.14

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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.