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Finding the Fourth Proportional to 69,914.50, 96,489.30 and 39,707.98

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Solution

The fourth proportional to 69,914.50, 96,489.30 and 39,707.98 is: 54,801.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,914.50 : 96,489.30 = 39,707.98 : x
  2. Step 2: Convert to fraction form
    69,914.50/96,489.30 = 39,707.98/x
  3. Step 3: Cross multiply
    69,914.50x = 96,489.30 × 39,707.98
  4. Step 4: Simplify right side
    69,914.50x = 3,831,395,194.61
  5. Step 5: Solve for x
    x = 3,831,395,194.61/69,914.50
  6. Step 6: Final answer
    x = 54,801.15

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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.