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Finding the Fourth Proportional to 81,861.46, 112,968.64 and 46,051.50

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Solution

The fourth proportional to 81,861.46, 112,968.64 and 46,051.50 is: 63,550.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,861.46 : 112,968.64 = 46,051.50 : x
  2. Step 2: Convert to fraction form
    81,861.46/112,968.64 = 46,051.50/x
  3. Step 3: Cross multiply
    81,861.46x = 112,968.64 × 46,051.50
  4. Step 4: Simplify right side
    81,861.46x = 5,202,374,760.12
  5. Step 5: Solve for x
    x = 5,202,374,760.12/81,861.46
  6. Step 6: Final answer
    x = 63,550.97

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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.