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Finding the Fourth Proportional to 75,279.15, 112,917.42 and 18,353.55

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Solution

The fourth proportional to 75,279.15, 112,917.42 and 18,353.55 is: 27,530.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,279.15 : 112,917.42 = 18,353.55 : x
  2. Step 2: Convert to fraction form
    75,279.15/112,917.42 = 18,353.55/x
  3. Step 3: Cross multiply
    75,279.15x = 112,917.42 × 18,353.55
  4. Step 4: Simplify right side
    75,279.15x = 2,072,435,513.84
  5. Step 5: Solve for x
    x = 2,072,435,513.84/75,279.15
  6. Step 6: Final answer
    x = 27,530.01

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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.