Home / 86,778.35-130,187.06-30,622.47

Finding the Fourth Proportional to 86,778.35, 130,187.06 and 30,622.47

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Solution

The fourth proportional to 86,778.35, 130,187.06 and 30,622.47 is: 45,940.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,778.35 : 130,187.06 = 30,622.47 : x
  2. Step 2: Convert to fraction form
    86,778.35/130,187.06 = 30,622.47/x
  3. Step 3: Cross multiply
    86,778.35x = 130,187.06 × 30,622.47
  4. Step 4: Simplify right side
    86,778.35x = 3,986,649,339.24
  5. Step 5: Solve for x
    x = 3,986,649,339.24/86,778.35
  6. Step 6: Final answer
    x = 45,940.60

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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.