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Finding the Fourth Proportional to 71,650.16, 98,891.81 and 49,051.61

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Solution

The fourth proportional to 71,650.16, 98,891.81 and 49,051.61 is: 67,701.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,650.16 : 98,891.81 = 49,051.61 : x
  2. Step 2: Convert to fraction form
    71,650.16/98,891.81 = 49,051.61/x
  3. Step 3: Cross multiply
    71,650.16x = 98,891.81 × 49,051.61
  4. Step 4: Simplify right side
    71,650.16x = 4,850,801,756.60
  5. Step 5: Solve for x
    x = 4,850,801,756.60/71,650.16
  6. Step 6: Final answer
    x = 67,701.20

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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.