Home / 81,767.44-112,849.50-49,929.64

Finding the Fourth Proportional to 81,767.44, 112,849.50 and 49,929.64

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Solution

The fourth proportional to 81,767.44, 112,849.50 and 49,929.64 is: 68,909.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,767.44 : 112,849.50 = 49,929.64 : x
  2. Step 2: Convert to fraction form
    81,767.44/112,849.50 = 49,929.64/x
  3. Step 3: Cross multiply
    81,767.44x = 112,849.50 × 49,929.64
  4. Step 4: Simplify right side
    81,767.44x = 5,634,534,909.18
  5. Step 5: Solve for x
    x = 5,634,534,909.18/81,767.44
  6. Step 6: Final answer
    x = 68,909.27

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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.