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Finding the Fourth Proportional to 72,359.60, 108,558 and 27,974.80

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Solution

The fourth proportional to 72,359.60, 108,558 and 27,974.80 is: 41,969.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,359.60 : 108,558 = 27,974.80 : x
  2. Step 2: Convert to fraction form
    72,359.60/108,558 = 27,974.80/x
  3. Step 3: Cross multiply
    72,359.60x = 108,558 × 27,974.80
  4. Step 4: Simplify right side
    72,359.60x = 3,036,888,338.40
  5. Step 5: Solve for x
    x = 3,036,888,338.40/72,359.60
  6. Step 6: Final answer
    x = 41,969.39

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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.