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Finding the Fourth Proportional to 81,816.62, 112,904.68 and 46,005.71

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Solution

The fourth proportional to 81,816.62, 112,904.68 and 46,005.71 is: 63,486.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,816.62 : 112,904.68 = 46,005.71 : x
  2. Step 2: Convert to fraction form
    81,816.62/112,904.68 = 46,005.71/x
  3. Step 3: Cross multiply
    81,816.62x = 112,904.68 × 46,005.71
  4. Step 4: Simplify right side
    81,816.62x = 5,194,259,965.72
  5. Step 5: Solve for x
    x = 5,194,259,965.72/81,816.62
  6. Step 6: Final answer
    x = 63,486.61

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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.