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Finding the Fourth Proportional to 68,003.94, 93,838.22 and 39,319

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Solution

The fourth proportional to 68,003.94, 93,838.22 and 39,319 is: 54,256.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,003.94 : 93,838.22 = 39,319 : x
  2. Step 2: Convert to fraction form
    68,003.94/93,838.22 = 39,319/x
  3. Step 3: Cross multiply
    68,003.94x = 93,838.22 × 39,319
  4. Step 4: Simplify right side
    68,003.94x = 3,689,624,972.18
  5. Step 5: Solve for x
    x = 3,689,624,972.18/68,003.94
  6. Step 6: Final answer
    x = 54,256.05

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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.