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Finding the Fourth Proportional to 71,324.60, 107,063.70 and 40,220.60

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Solution

The fourth proportional to 71,324.60, 107,063.70 and 40,220.60 is: 60,374.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,324.60 : 107,063.70 = 40,220.60 : x
  2. Step 2: Convert to fraction form
    71,324.60/107,063.70 = 40,220.60/x
  3. Step 3: Cross multiply
    71,324.60x = 107,063.70 × 40,220.60
  4. Step 4: Simplify right side
    71,324.60x = 4,306,166,252.22
  5. Step 5: Solve for x
    x = 4,306,166,252.22/71,324.60
  6. Step 6: Final answer
    x = 60,374.21

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1.5x scale

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.