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Finding the Fourth Proportional to 68,509.82, 94,555.58 and 39,838.35

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Solution

The fourth proportional to 68,509.82, 94,555.58 and 39,838.35 is: 54,983.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,509.82 : 94,555.58 = 39,838.35 : x
  2. Step 2: Convert to fraction form
    68,509.82/94,555.58 = 39,838.35/x
  3. Step 3: Cross multiply
    68,509.82x = 94,555.58 × 39,838.35
  4. Step 4: Simplify right side
    68,509.82x = 3,766,938,390.09
  5. Step 5: Solve for x
    x = 3,766,938,390.09/68,509.82
  6. Step 6: Final answer
    x = 54,983.92

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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.