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Finding the Fourth Proportional to 71,649.78, 98,868.84 and 41,430.54

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Solution

The fourth proportional to 71,649.78, 98,868.84 and 41,430.54 is: 57,169.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,649.78 : 98,868.84 = 41,430.54 : x
  2. Step 2: Convert to fraction form
    71,649.78/98,868.84 = 41,430.54/x
  3. Step 3: Cross multiply
    71,649.78x = 98,868.84 × 41,430.54
  4. Step 4: Simplify right side
    71,649.78x = 4,096,189,430.37
  5. Step 5: Solve for x
    x = 4,096,189,430.37/71,649.78
  6. Step 6: Final answer
    x = 57,169.60

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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.