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Finding the Fourth Proportional to 61,009.57, 84,223.78 and 38,361.02

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Solution

The fourth proportional to 61,009.57, 84,223.78 and 38,361.02 is: 52,957.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,009.57 : 84,223.78 = 38,361.02 : x
  2. Step 2: Convert to fraction form
    61,009.57/84,223.78 = 38,361.02/x
  3. Step 3: Cross multiply
    61,009.57x = 84,223.78 × 38,361.02
  4. Step 4: Simplify right side
    61,009.57x = 3,230,910,109.06
  5. Step 5: Solve for x
    x = 3,230,910,109.06/61,009.57
  6. Step 6: Final answer
    x = 52,957.43

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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.