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Finding the Fourth Proportional to 68,635.40, 94,709.94 and 38,418.76

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Solution

The fourth proportional to 68,635.40, 94,709.94 and 38,418.76 is: 53,014.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,635.40 : 94,709.94 = 38,418.76 : x
  2. Step 2: Convert to fraction form
    68,635.40/94,709.94 = 38,418.76/x
  3. Step 3: Cross multiply
    68,635.40x = 94,709.94 × 38,418.76
  4. Step 4: Simplify right side
    68,635.40x = 3,638,638,454.47
  5. Step 5: Solve for x
    x = 3,638,638,454.47/68,635.40
  6. Step 6: Final answer
    x = 53,014.02

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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.