Home / 81,036.35-111,696.32-54,169.05

Finding the Fourth Proportional to 81,036.35, 111,696.32 and 54,169.05

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Solution

The fourth proportional to 81,036.35, 111,696.32 and 54,169.05 is: 74,663.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,036.35 : 111,696.32 = 54,169.05 : x
  2. Step 2: Convert to fraction form
    81,036.35/111,696.32 = 54,169.05/x
  3. Step 3: Cross multiply
    81,036.35x = 111,696.32 × 54,169.05
  4. Step 4: Simplify right side
    81,036.35x = 6,050,483,792.48
  5. Step 5: Solve for x
    x = 6,050,483,792.48/81,036.35
  6. Step 6: Final answer
    x = 74,663.83

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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.