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Finding the Fourth Proportional to 61,522.56, 84,888 and 39,170.88

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Solution

The fourth proportional to 61,522.56, 84,888 and 39,170.88 is: 54,047.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,522.56 : 84,888 = 39,170.88 : x
  2. Step 2: Convert to fraction form
    61,522.56/84,888 = 39,170.88/x
  3. Step 3: Cross multiply
    61,522.56x = 84,888 × 39,170.88
  4. Step 4: Simplify right side
    61,522.56x = 3,325,137,661.44
  5. Step 5: Solve for x
    x = 3,325,137,661.44/61,522.56
  6. Step 6: Final answer
    x = 54,047.45

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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.