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Finding the Fourth Proportional to 75,346.80, 112,874.40 and 44,145.60

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Solution

The fourth proportional to 75,346.80, 112,874.40 and 44,145.60 is: 66,132.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,346.80 : 112,874.40 = 44,145.60 : x
  2. Step 2: Convert to fraction form
    75,346.80/112,874.40 = 44,145.60/x
  3. Step 3: Cross multiply
    75,346.80x = 112,874.40 × 44,145.60
  4. Step 4: Simplify right side
    75,346.80x = 4,982,908,112.64
  5. Step 5: Solve for x
    x = 4,982,908,112.64/75,346.80
  6. Step 6: Final answer
    x = 66,132.98

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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.