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Finding the Fourth Proportional to 81,674.78, 112,708.26 and 45,866.30

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Solution

The fourth proportional to 81,674.78, 112,708.26 and 45,866.30 is: 63,293.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,674.78 : 112,708.26 = 45,866.30 : x
  2. Step 2: Convert to fraction form
    81,674.78/112,708.26 = 45,866.30/x
  3. Step 3: Cross multiply
    81,674.78x = 112,708.26 × 45,866.30
  4. Step 4: Simplify right side
    81,674.78x = 5,169,510,302.10
  5. Step 5: Solve for x
    x = 5,169,510,302.10/81,674.78
  6. Step 6: Final answer
    x = 63,293.84

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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.