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Finding the Fourth Proportional to 61,759.80, 85,220.19 and 39,058.74

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Solution

The fourth proportional to 61,759.80, 85,220.19 and 39,058.74 is: 53,895.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,759.80 : 85,220.19 = 39,058.74 : x
  2. Step 2: Convert to fraction form
    61,759.80/85,220.19 = 39,058.74/x
  3. Step 3: Cross multiply
    61,759.80x = 85,220.19 × 39,058.74
  4. Step 4: Simplify right side
    61,759.80x = 3,328,593,243.96
  5. Step 5: Solve for x
    x = 3,328,593,243.96/61,759.80
  6. Step 6: Final answer
    x = 53,895.79

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1.5x scale

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.