Home / 86,784.38-130,192.99-30,618.11

Finding the Fourth Proportional to 86,784.38, 130,192.99 and 30,618.11

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Solution

The fourth proportional to 86,784.38, 130,192.99 and 30,618.11 is: 45,932.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,784.38 : 130,192.99 = 30,618.11 : x
  2. Step 2: Convert to fraction form
    86,784.38/130,192.99 = 30,618.11/x
  3. Step 3: Cross multiply
    86,784.38x = 130,192.99 × 30,618.11
  4. Step 4: Simplify right side
    86,784.38x = 3,986,263,537.99
  5. Step 5: Solve for x
    x = 3,986,263,537.99/86,784.38
  6. Step 6: Final answer
    x = 45,932.96

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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.