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Finding the Fourth Proportional to 68,489.04, 94,515 and 38,274.36

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Solution

The fourth proportional to 68,489.04, 94,515 and 38,274.36 is: 52,818.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,489.04 : 94,515 = 38,274.36 : x
  2. Step 2: Convert to fraction form
    68,489.04/94,515 = 38,274.36/x
  3. Step 3: Cross multiply
    68,489.04x = 94,515 × 38,274.36
  4. Step 4: Simplify right side
    68,489.04x = 3,617,501,135.40
  5. Step 5: Solve for x
    x = 3,617,501,135.40/68,489.04
  6. Step 6: Final answer
    x = 52,818.69

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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.