Home / 86,803.26-130,139.37-30,618.78

Finding the Fourth Proportional to 86,803.26, 130,139.37 and 30,618.78

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Solution

The fourth proportional to 86,803.26, 130,139.37 and 30,618.78 is: 45,905.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,803.26 : 130,139.37 = 30,618.78 : x
  2. Step 2: Convert to fraction form
    86,803.26/130,139.37 = 30,618.78/x
  3. Step 3: Cross multiply
    86,803.26x = 130,139.37 × 30,618.78
  4. Step 4: Simplify right side
    86,803.26x = 3,984,708,739.37
  5. Step 5: Solve for x
    x = 3,984,708,739.37/86,803.26
  6. Step 6: Final answer
    x = 45,905.06

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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.