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Finding the Fourth Proportional to 68,378.99, 94,361.76 and 38,163.76

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Solution

The fourth proportional to 68,378.99, 94,361.76 and 38,163.76 is: 52,665.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,378.99 : 94,361.76 = 38,163.76 : x
  2. Step 2: Convert to fraction form
    68,378.99/94,361.76 = 38,163.76/x
  3. Step 3: Cross multiply
    68,378.99x = 94,361.76 × 38,163.76
  4. Step 4: Simplify right side
    68,378.99x = 3,601,199,325.91
  5. Step 5: Solve for x
    x = 3,601,199,325.91/68,378.99
  6. Step 6: Final answer
    x = 52,665.29

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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.