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Finding the Fourth Proportional to 76,699.53, 115,049.79 and 26,779.64

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Solution

The fourth proportional to 76,699.53, 115,049.79 and 26,779.64 is: 40,169.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,699.53 : 115,049.79 = 26,779.64 : x
  2. Step 2: Convert to fraction form
    76,699.53/115,049.79 = 26,779.64/x
  3. Step 3: Cross multiply
    76,699.53x = 115,049.79 × 26,779.64
  4. Step 4: Simplify right side
    76,699.53x = 3,080,991,383.03
  5. Step 5: Solve for x
    x = 3,080,991,383.03/76,699.53
  6. Step 6: Final answer
    x = 40,169.63

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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.