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Finding the Fourth Proportional to 73,998.40, 111,005.70 and 71,665.60

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Solution

The fourth proportional to 73,998.40, 111,005.70 and 71,665.60 is: 107,506.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,998.40 : 111,005.70 = 71,665.60 : x
  2. Step 2: Convert to fraction form
    73,998.40/111,005.70 = 71,665.60/x
  3. Step 3: Cross multiply
    73,998.40x = 111,005.70 × 71,665.60
  4. Step 4: Simplify right side
    73,998.40x = 7,955,290,093.92
  5. Step 5: Solve for x
    x = 7,955,290,093.92/73,998.40
  6. Step 6: Final answer
    x = 107,506.24

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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.