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Finding the Fourth Proportional to 61,912.68, 85,395.78 and 38,052.78

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Solution

The fourth proportional to 61,912.68, 85,395.78 and 38,052.78 is: 52,485.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,912.68 : 85,395.78 = 38,052.78 : x
  2. Step 2: Convert to fraction form
    61,912.68/85,395.78 = 38,052.78/x
  3. Step 3: Cross multiply
    61,912.68x = 85,395.78 × 38,052.78
  4. Step 4: Simplify right side
    61,912.68x = 3,249,546,829.27
  5. Step 5: Solve for x
    x = 3,249,546,829.27/61,912.68
  6. Step 6: Final answer
    x = 52,485.97

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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.