Home / 72,720.26-109,005.14-27,729.50

Finding the Fourth Proportional to 72,720.26, 109,005.14 and 27,729.50

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Solution

The fourth proportional to 72,720.26, 109,005.14 and 27,729.50 is: 41,565.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,720.26 : 109,005.14 = 27,729.50 : x
  2. Step 2: Convert to fraction form
    72,720.26/109,005.14 = 27,729.50/x
  3. Step 3: Cross multiply
    72,720.26x = 109,005.14 × 27,729.50
  4. Step 4: Simplify right side
    72,720.26x = 3,022,658,029.63
  5. Step 5: Solve for x
    x = 3,022,658,029.63/72,720.26
  6. Step 6: Final answer
    x = 41,565.56

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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.