Home / 86,719.86-130,025.79-39,912.66

Finding the Fourth Proportional to 86,719.86, 130,025.79 and 39,912.66

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Solution

The fourth proportional to 86,719.86, 130,025.79 and 39,912.66 is: 59,844.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,719.86 : 130,025.79 = 39,912.66 : x
  2. Step 2: Convert to fraction form
    86,719.86/130,025.79 = 39,912.66/x
  3. Step 3: Cross multiply
    86,719.86x = 130,025.79 × 39,912.66
  4. Step 4: Simplify right side
    86,719.86x = 5,189,675,147.50
  5. Step 5: Solve for x
    x = 5,189,675,147.50/86,719.86
  6. Step 6: Final answer
    x = 59,844.14

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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.