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Finding the Fourth Proportional to 68,418.06, 94,416 and 38,203.90

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Solution

The fourth proportional to 68,418.06, 94,416 and 38,203.90 is: 52,720.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,418.06 : 94,416 = 38,203.90 : x
  2. Step 2: Convert to fraction form
    68,418.06/94,416 = 38,203.90/x
  3. Step 3: Cross multiply
    68,418.06x = 94,416 × 38,203.90
  4. Step 4: Simplify right side
    68,418.06x = 3,607,059,422.40
  5. Step 5: Solve for x
    x = 3,607,059,422.40/68,418.06
  6. Step 6: Final answer
    x = 52,720.87

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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.