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Finding the Fourth Proportional to 74,917.12, 112,375.20 and 19,513.12

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Solution

The fourth proportional to 74,917.12, 112,375.20 and 19,513.12 is: 29,269.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,917.12 : 112,375.20 = 19,513.12 : x
  2. Step 2: Convert to fraction form
    74,917.12/112,375.20 = 19,513.12/x
  3. Step 3: Cross multiply
    74,917.12x = 112,375.20 × 19,513.12
  4. Step 4: Simplify right side
    74,917.12x = 2,192,790,762.62
  5. Step 5: Solve for x
    x = 2,192,790,762.62/74,917.12
  6. Step 6: Final answer
    x = 29,269.55

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1.5x scale

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.