Home / 76,779.48-115,185.62-26,861.20

Finding the Fourth Proportional to 76,779.48, 115,185.62 and 26,861.20

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Solution

The fourth proportional to 76,779.48, 115,185.62 and 26,861.20 is: 40,297.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,779.48 : 115,185.62 = 26,861.20 : x
  2. Step 2: Convert to fraction form
    76,779.48/115,185.62 = 26,861.20/x
  3. Step 3: Cross multiply
    76,779.48x = 115,185.62 × 26,861.20
  4. Step 4: Simplify right side
    76,779.48x = 3,094,023,999.54
  5. Step 5: Solve for x
    x = 3,094,023,999.54/76,779.48
  6. Step 6: Final answer
    x = 40,297.54

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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.