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Finding the Fourth Proportional to 68,263.84, 94,206 and 39,970.72

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Solution

The fourth proportional to 68,263.84, 94,206 and 39,970.72 is: 55,160.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,263.84 : 94,206 = 39,970.72 : x
  2. Step 2: Convert to fraction form
    68,263.84/94,206 = 39,970.72/x
  3. Step 3: Cross multiply
    68,263.84x = 94,206 × 39,970.72
  4. Step 4: Simplify right side
    68,263.84x = 3,765,481,648.32
  5. Step 5: Solve for x
    x = 3,765,481,648.32/68,263.84
  6. Step 6: Final answer
    x = 55,160.71

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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.