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Finding the Fourth Proportional to 71,370.70, 106,940.85 and 59,620.30

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Solution

The fourth proportional to 71,370.70, 106,940.85 and 59,620.30 is: 89,334.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,370.70 : 106,940.85 = 59,620.30 : x
  2. Step 2: Convert to fraction form
    71,370.70/106,940.85 = 59,620.30/x
  3. Step 3: Cross multiply
    71,370.70x = 106,940.85 × 59,620.30
  4. Step 4: Simplify right side
    71,370.70x = 6,375,845,559.26
  5. Step 5: Solve for x
    x = 6,375,845,559.26/71,370.70
  6. Step 6: Final answer
    x = 89,334.22

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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.