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Finding the Fourth Proportional to 81,874.40, 112,978.62 and 46,063.64

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Solution

The fourth proportional to 81,874.40, 112,978.62 and 46,063.64 is: 63,563.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,874.40 : 112,978.62 = 46,063.64 : x
  2. Step 2: Convert to fraction form
    81,874.40/112,978.62 = 46,063.64/x
  3. Step 3: Cross multiply
    81,874.40x = 112,978.62 × 46,063.64
  4. Step 4: Simplify right side
    81,874.40x = 5,204,206,479.38
  5. Step 5: Solve for x
    x = 5,204,206,479.38/81,874.40
  6. Step 6: Final answer
    x = 63,563.29

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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.