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Finding the Fourth Proportional to 68,642.74, 94,728.59 and 38,427.31

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Solution

The fourth proportional to 68,642.74, 94,728.59 and 38,427.31 is: 53,030.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,642.74 : 94,728.59 = 38,427.31 : x
  2. Step 2: Convert to fraction form
    68,642.74/94,728.59 = 38,427.31/x
  3. Step 3: Cross multiply
    68,642.74x = 94,728.59 × 38,427.31
  4. Step 4: Simplify right side
    68,642.74x = 3,640,164,893.79
  5. Step 5: Solve for x
    x = 3,640,164,893.79/68,642.74
  6. Step 6: Final answer
    x = 53,030.59

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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.