Home / 77,191.37-115,856.26-64,619.82

Finding the Fourth Proportional to 77,191.37, 115,856.26 and 64,619.82

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Solution

The fourth proportional to 77,191.37, 115,856.26 and 64,619.82 is: 96,987.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,191.37 : 115,856.26 = 64,619.82 : x
  2. Step 2: Convert to fraction form
    77,191.37/115,856.26 = 64,619.82/x
  3. Step 3: Cross multiply
    77,191.37x = 115,856.26 × 64,619.82
  4. Step 4: Simplify right side
    77,191.37x = 7,486,610,287.75
  5. Step 5: Solve for x
    x = 7,486,610,287.75/77,191.37
  6. Step 6: Final answer
    x = 96,987.65

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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.