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Finding the Fourth Proportional to 81,301.86, 112,206.87 and 49,468.86

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Solution

The fourth proportional to 81,301.86, 112,206.87 and 49,468.86 is: 68,273.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,301.86 : 112,206.87 = 49,468.86 : x
  2. Step 2: Convert to fraction form
    81,301.86/112,206.87 = 49,468.86/x
  3. Step 3: Cross multiply
    81,301.86x = 112,206.87 × 49,468.86
  4. Step 4: Simplify right side
    81,301.86x = 5,550,745,943.07
  5. Step 5: Solve for x
    x = 5,550,745,943.07/81,301.86
  6. Step 6: Final answer
    x = 68,273.30

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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.