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Finding the Fourth Proportional to 68,167.40, 102,264.91 and 28,724.49

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Solution

The fourth proportional to 68,167.40, 102,264.91 and 28,724.49 is: 43,092.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,167.40 : 102,264.91 = 28,724.49 : x
  2. Step 2: Convert to fraction form
    68,167.40/102,264.91 = 28,724.49/x
  3. Step 3: Cross multiply
    68,167.40x = 102,264.91 × 28,724.49
  4. Step 4: Simplify right side
    68,167.40x = 2,937,507,312.83
  5. Step 5: Solve for x
    x = 2,937,507,312.83/68,167.40
  6. Step 6: Final answer
    x = 43,092.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.