Home / 86,778.11-130,186.70-30,622.22

Finding the Fourth Proportional to 86,778.11, 130,186.70 and 30,622.22

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Solution

The fourth proportional to 86,778.11, 130,186.70 and 30,622.22 is: 45,940.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,778.11 : 130,186.70 = 30,622.22 : x
  2. Step 2: Convert to fraction form
    86,778.11/130,186.70 = 30,622.22/x
  3. Step 3: Cross multiply
    86,778.11x = 130,186.70 × 30,622.22
  4. Step 4: Simplify right side
    86,778.11x = 3,986,604,964.43
  5. Step 5: Solve for x
    x = 3,986,604,964.43/86,778.11
  6. Step 6: Final answer
    x = 45,940.22

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1.5x scale

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.