Home / 81,816.27-112,917.96-68,366.22

Finding the Fourth Proportional to 81,816.27, 112,917.96 and 68,366.22

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Solution

The fourth proportional to 81,816.27, 112,917.96 and 68,366.22 is: 94,355.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,816.27 : 112,917.96 = 68,366.22 : x
  2. Step 2: Convert to fraction form
    81,816.27/112,917.96 = 68,366.22/x
  3. Step 3: Cross multiply
    81,816.27x = 112,917.96 × 68,366.22
  4. Step 4: Simplify right side
    81,816.27x = 7,719,774,095.31
  5. Step 5: Solve for x
    x = 7,719,774,095.31/81,816.27
  6. Step 6: Final answer
    x = 94,355.00

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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.