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Finding the Fourth Proportional to 68,707.44, 94,798.35 and 39,628.64

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Solution

The fourth proportional to 68,707.44, 94,798.35 and 39,628.64 is: 54,677.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,707.44 : 94,798.35 = 39,628.64 : x
  2. Step 2: Convert to fraction form
    68,707.44/94,798.35 = 39,628.64/x
  3. Step 3: Cross multiply
    68,707.44x = 94,798.35 × 39,628.64
  4. Step 4: Simplify right side
    68,707.44x = 3,756,729,921.74
  5. Step 5: Solve for x
    x = 3,756,729,921.74/68,707.44
  6. Step 6: Final answer
    x = 54,677.19

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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.