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Finding the Fourth Proportional to 112,375.80, 168,464.72 and 45,871.82

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Solution

The fourth proportional to 112,375.80, 168,464.72 and 45,871.82 is: 68,767.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,375.80 : 168,464.72 = 45,871.82 : x
  2. Step 2: Convert to fraction form
    112,375.80/168,464.72 = 45,871.82/x
  3. Step 3: Cross multiply
    112,375.80x = 168,464.72 × 45,871.82
  4. Step 4: Simplify right side
    112,375.80x = 7,727,783,312.19
  5. Step 5: Solve for x
    x = 7,727,783,312.19/112,375.80
  6. Step 6: Final answer
    x = 68,767.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.