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Finding the Fourth Proportional to 71,245.52, 106,342.11 and 62,840.78

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Solution

The fourth proportional to 71,245.52, 106,342.11 and 62,840.78 is: 93,797.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,245.52 : 106,342.11 = 62,840.78 : x
  2. Step 2: Convert to fraction form
    71,245.52/106,342.11 = 62,840.78/x
  3. Step 3: Cross multiply
    71,245.52x = 106,342.11 × 62,840.78
  4. Step 4: Simplify right side
    71,245.52x = 6,682,621,139.25
  5. Step 5: Solve for x
    x = 6,682,621,139.25/71,245.52
  6. Step 6: Final answer
    x = 93,797.07

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.