Home / 83,815.32-115,659.99-47,997.12

Finding the Fourth Proportional to 83,815.32, 115,659.99 and 47,997.12

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Solution

The fourth proportional to 83,815.32, 115,659.99 and 47,997.12 is: 66,233.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,815.32 : 115,659.99 = 47,997.12 : x
  2. Step 2: Convert to fraction form
    83,815.32/115,659.99 = 47,997.12/x
  3. Step 3: Cross multiply
    83,815.32x = 115,659.99 × 47,997.12
  4. Step 4: Simplify right side
    83,815.32x = 5,551,346,419.23
  5. Step 5: Solve for x
    x = 5,551,346,419.23/83,815.32
  6. Step 6: Final answer
    x = 66,233.08

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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.