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Finding the Fourth Proportional to 112,578.40, 168,813.06 and 45,992.08

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Solution

The fourth proportional to 112,578.40, 168,813.06 and 45,992.08 is: 68,965.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,578.40 : 168,813.06 = 45,992.08 : x
  2. Step 2: Convert to fraction form
    112,578.40/168,813.06 = 45,992.08/x
  3. Step 3: Cross multiply
    112,578.40x = 168,813.06 × 45,992.08
  4. Step 4: Simplify right side
    112,578.40x = 7,764,063,760.56
  5. Step 5: Solve for x
    x = 7,764,063,760.56/112,578.40
  6. Step 6: Final answer
    x = 68,965.84

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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.