Home / 86,919.40-130,340.70-40,186.60

Finding the Fourth Proportional to 86,919.40, 130,340.70 and 40,186.60

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Solution

The fourth proportional to 86,919.40, 130,340.70 and 40,186.60 is: 60,262.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,919.40 : 130,340.70 = 40,186.60 : x
  2. Step 2: Convert to fraction form
    86,919.40/130,340.70 = 40,186.60/x
  3. Step 3: Cross multiply
    86,919.40x = 130,340.70 × 40,186.60
  4. Step 4: Simplify right side
    86,919.40x = 5,237,949,574.62
  5. Step 5: Solve for x
    x = 5,237,949,574.62/86,919.40
  6. Step 6: Final answer
    x = 60,262.15

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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.