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Finding the Fourth Proportional to 68,453.38, 94,465.66 and 38,645.38

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Solution

The fourth proportional to 68,453.38, 94,465.66 and 38,645.38 is: 53,330.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,453.38 : 94,465.66 = 38,645.38 : x
  2. Step 2: Convert to fraction form
    68,453.38/94,465.66 = 38,645.38/x
  3. Step 3: Cross multiply
    68,453.38x = 94,465.66 × 38,645.38
  4. Step 4: Simplify right side
    68,453.38x = 3,650,660,855.32
  5. Step 5: Solve for x
    x = 3,650,660,855.32/68,453.38
  6. Step 6: Final answer
    x = 53,330.62

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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.