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Finding the Fourth Proportional to 75,338.40, 112,935.60 and 27,940.80

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Solution

The fourth proportional to 75,338.40, 112,935.60 and 27,940.80 is: 41,884.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,338.40 : 112,935.60 = 27,940.80 : x
  2. Step 2: Convert to fraction form
    75,338.40/112,935.60 = 27,940.80/x
  3. Step 3: Cross multiply
    75,338.40x = 112,935.60 × 27,940.80
  4. Step 4: Simplify right side
    75,338.40x = 3,155,511,012.48
  5. Step 5: Solve for x
    x = 3,155,511,012.48/75,338.40
  6. Step 6: Final answer
    x = 41,884.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.