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Finding the Fourth Proportional to 71,360.80, 106,938.80 and 52,493.60

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Solution

The fourth proportional to 71,360.80, 106,938.80 and 52,493.60 is: 78,665.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,360.80 : 106,938.80 = 52,493.60 : x
  2. Step 2: Convert to fraction form
    71,360.80/106,938.80 = 52,493.60/x
  3. Step 3: Cross multiply
    71,360.80x = 106,938.80 × 52,493.60
  4. Step 4: Simplify right side
    71,360.80x = 5,613,602,591.68
  5. Step 5: Solve for x
    x = 5,613,602,591.68/71,360.80
  6. Step 6: Final answer
    x = 78,665.07

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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.