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Finding the Fourth Proportional to 61,157.75, 84,361.85 and 38,460.74

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Solution

The fourth proportional to 61,157.75, 84,361.85 and 38,460.74 is: 53,053.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,157.75 : 84,361.85 = 38,460.74 : x
  2. Step 2: Convert to fraction form
    61,157.75/84,361.85 = 38,460.74/x
  3. Step 3: Cross multiply
    61,157.75x = 84,361.85 × 38,460.74
  4. Step 4: Simplify right side
    61,157.75x = 3,244,618,564.66
  5. Step 5: Solve for x
    x = 3,244,618,564.66/61,157.75
  6. Step 6: Final answer
    x = 53,053.27

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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.