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Finding the Fourth Proportional to 68,144.83, 94,014.63 and 68,039.74

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Solution

The fourth proportional to 68,144.83, 94,014.63 and 68,039.74 is: 93,869.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,144.83 : 94,014.63 = 68,039.74 : x
  2. Step 2: Convert to fraction form
    68,144.83/94,014.63 = 68,039.74/x
  3. Step 3: Cross multiply
    68,144.83x = 94,014.63 × 68,039.74
  4. Step 4: Simplify right side
    68,144.83x = 6,396,730,981.40
  5. Step 5: Solve for x
    x = 6,396,730,981.40/68,144.83
  6. Step 6: Final answer
    x = 93,869.64

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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.