Home / 61,640.31-85,065.80-34,781.25

Finding the Fourth Proportional to 61,640.31, 85,065.80 and 34,781.25

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Solution

The fourth proportional to 61,640.31, 85,065.80 and 34,781.25 is: 47,999.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,640.31 : 85,065.80 = 34,781.25 : x
  2. Step 2: Convert to fraction form
    61,640.31/85,065.80 = 34,781.25/x
  3. Step 3: Cross multiply
    61,640.31x = 85,065.80 × 34,781.25
  4. Step 4: Simplify right side
    61,640.31x = 2,958,694,517.87
  5. Step 5: Solve for x
    x = 2,958,694,517.87/61,640.31
  6. Step 6: Final answer
    x = 47,999.35

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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.