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Finding the Fourth Proportional to 81,811.80, 112,893.48 and 46,005.75

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Solution

The fourth proportional to 81,811.80, 112,893.48 and 46,005.75 is: 63,484.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,811.80 : 112,893.48 = 46,005.75 : x
  2. Step 2: Convert to fraction form
    81,811.80/112,893.48 = 46,005.75/x
  3. Step 3: Cross multiply
    81,811.80x = 112,893.48 × 46,005.75
  4. Step 4: Simplify right side
    81,811.80x = 5,193,749,217.51
  5. Step 5: Solve for x
    x = 5,193,749,217.51/81,811.80
  6. Step 6: Final answer
    x = 63,484.11

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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.