Home / 81,784.62-113,064.05-81,036.18

Finding the Fourth Proportional to 81,784.62, 113,064.05 and 81,036.18

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Solution

The fourth proportional to 81,784.62, 113,064.05 and 81,036.18 is: 112,029.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,784.62 : 113,064.05 = 81,036.18 : x
  2. Step 2: Convert to fraction form
    81,784.62/113,064.05 = 81,036.18/x
  3. Step 3: Cross multiply
    81,784.62x = 113,064.05 × 81,036.18
  4. Step 4: Simplify right side
    81,784.62x = 9,162,278,909.92
  5. Step 5: Solve for x
    x = 9,162,278,909.92/81,784.62
  6. Step 6: Final answer
    x = 112,029.36

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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.