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Finding the Fourth Proportional to 71,193.68, 98,243.23 and 39,360.53

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Solution

The fourth proportional to 71,193.68, 98,243.23 and 39,360.53 is: 54,315.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,193.68 : 98,243.23 = 39,360.53 : x
  2. Step 2: Convert to fraction form
    71,193.68/98,243.23 = 39,360.53/x
  3. Step 3: Cross multiply
    71,193.68x = 98,243.23 × 39,360.53
  4. Step 4: Simplify right side
    71,193.68x = 3,866,905,822.72
  5. Step 5: Solve for x
    x = 3,866,905,822.72/71,193.68
  6. Step 6: Final answer
    x = 54,315.29

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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.