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Finding the Fourth Proportional to 71,889.68, 99,176.46 and 43,220.54

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Solution

The fourth proportional to 71,889.68, 99,176.46 and 43,220.54 is: 59,625.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,889.68 : 99,176.46 = 43,220.54 : x
  2. Step 2: Convert to fraction form
    71,889.68/99,176.46 = 43,220.54/x
  3. Step 3: Cross multiply
    71,889.68x = 99,176.46 × 43,220.54
  4. Step 4: Simplify right side
    71,889.68x = 4,286,460,156.49
  5. Step 5: Solve for x
    x = 4,286,460,156.49/71,889.68
  6. Step 6: Final answer
    x = 59,625.53

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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.