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Finding the Fourth Proportional to 68,356.88, 94,317.38 and 39,659.91

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Solution

The fourth proportional to 68,356.88, 94,317.38 and 39,659.91 is: 54,721.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,356.88 : 94,317.38 = 39,659.91 : x
  2. Step 2: Convert to fraction form
    68,356.88/94,317.38 = 39,659.91/x
  3. Step 3: Cross multiply
    68,356.88x = 94,317.38 × 39,659.91
  4. Step 4: Simplify right side
    68,356.88x = 3,740,618,603.94
  5. Step 5: Solve for x
    x = 3,740,618,603.94/68,356.88
  6. Step 6: Final answer
    x = 54,721.91

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1.5x scale

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.