Home / 76,742.88-115,128.90-26,837.16

Finding the Fourth Proportional to 76,742.88, 115,128.90 and 26,837.16

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Solution

The fourth proportional to 76,742.88, 115,128.90 and 26,837.16 is: 40,260.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,742.88 : 115,128.90 = 26,837.16 : x
  2. Step 2: Convert to fraction form
    76,742.88/115,128.90 = 26,837.16/x
  3. Step 3: Cross multiply
    76,742.88x = 115,128.90 × 26,837.16
  4. Step 4: Simplify right side
    76,742.88x = 3,089,732,709.92
  5. Step 5: Solve for x
    x = 3,089,732,709.92/76,742.88
  6. Step 6: Final answer
    x = 40,260.84

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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.