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Finding the Fourth Proportional to 68,718.90, 94,825.50 and 47,227.50

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Solution

The fourth proportional to 68,718.90, 94,825.50 and 47,227.50 is: 65,169.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,718.90 : 94,825.50 = 47,227.50 : x
  2. Step 2: Convert to fraction form
    68,718.90/94,825.50 = 47,227.50/x
  3. Step 3: Cross multiply
    68,718.90x = 94,825.50 × 47,227.50
  4. Step 4: Simplify right side
    68,718.90x = 4,478,371,301.25
  5. Step 5: Solve for x
    x = 4,478,371,301.25/68,718.90
  6. Step 6: Final answer
    x = 65,169.43

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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.