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Finding the Fourth Proportional to 43,487.77, 65,223.79 and 19,789.73

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Solution

The fourth proportional to 43,487.77, 65,223.79 and 19,789.73 is: 29,681.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,487.77 : 65,223.79 = 19,789.73 : x
  2. Step 2: Convert to fraction form
    43,487.77/65,223.79 = 19,789.73/x
  3. Step 3: Cross multiply
    43,487.77x = 65,223.79 × 19,789.73
  4. Step 4: Simplify right side
    43,487.77x = 1,290,761,193.68
  5. Step 5: Solve for x
    x = 1,290,761,193.68/43,487.77
  6. Step 6: Final answer
    x = 29,681.02

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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.