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Finding the Fourth Proportional to 75,211.79, 103,732.48 and 63,918.67

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Solution

The fourth proportional to 75,211.79, 103,732.48 and 63,918.67 is: 88,156.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,211.79 : 103,732.48 = 63,918.67 : x
  2. Step 2: Convert to fraction form
    75,211.79/103,732.48 = 63,918.67/x
  3. Step 3: Cross multiply
    75,211.79x = 103,732.48 × 63,918.67
  4. Step 4: Simplify right side
    75,211.79x = 6,630,441,543.78
  5. Step 5: Solve for x
    x = 6,630,441,543.78/75,211.79
  6. Step 6: Final answer
    x = 88,156.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.