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Finding the Fourth Proportional to 68,565.49, 94,615.48 and 39,889.66

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Solution

The fourth proportional to 68,565.49, 94,615.48 and 39,889.66 is: 55,044.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,565.49 : 94,615.48 = 39,889.66 : x
  2. Step 2: Convert to fraction form
    68,565.49/94,615.48 = 39,889.66/x
  3. Step 3: Cross multiply
    68,565.49x = 94,615.48 × 39,889.66
  4. Step 4: Simplify right side
    68,565.49x = 3,774,179,327.94
  5. Step 5: Solve for x
    x = 3,774,179,327.94/68,565.49
  6. Step 6: Final answer
    x = 55,044.88

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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.