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Finding the Fourth Proportional to 75,253.42, 112,870.88 and 43,680.68

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Solution

The fourth proportional to 75,253.42, 112,870.88 and 43,680.68 is: 65,515.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,253.42 : 112,870.88 = 43,680.68 : x
  2. Step 2: Convert to fraction form
    75,253.42/112,870.88 = 43,680.68/x
  3. Step 3: Cross multiply
    75,253.42x = 112,870.88 × 43,680.68
  4. Step 4: Simplify right side
    75,253.42x = 4,930,276,790.60
  5. Step 5: Solve for x
    x = 4,930,276,790.60/75,253.42
  6. Step 6: Final answer
    x = 65,515.65

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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.