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Finding the Fourth Proportional to 71,894.45, 99,214.44 and 40,062.65

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Solution

The fourth proportional to 71,894.45, 99,214.44 and 40,062.65 is: 55,286.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,894.45 : 99,214.44 = 40,062.65 : x
  2. Step 2: Convert to fraction form
    71,894.45/99,214.44 = 40,062.65/x
  3. Step 3: Cross multiply
    71,894.45x = 99,214.44 × 40,062.65
  4. Step 4: Simplify right side
    71,894.45x = 3,974,793,384.67
  5. Step 5: Solve for x
    x = 3,974,793,384.67/71,894.45
  6. Step 6: Final answer
    x = 55,286.51

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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.