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Finding the Fourth Proportional to 72,021.30, 107,999.55 and 27,633.30

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Solution

The fourth proportional to 72,021.30, 107,999.55 and 27,633.30 is: 41,437.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,021.30 : 107,999.55 = 27,633.30 : x
  2. Step 2: Convert to fraction form
    72,021.30/107,999.55 = 27,633.30/x
  3. Step 3: Cross multiply
    72,021.30x = 107,999.55 × 27,633.30
  4. Step 4: Simplify right side
    72,021.30x = 2,984,383,965.02
  5. Step 5: Solve for x
    x = 2,984,383,965.02/72,021.30
  6. Step 6: Final answer
    x = 41,437.52

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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.