Home / 86,821.56-130,199.22-30,651.21

Finding the Fourth Proportional to 86,821.56, 130,199.22 and 30,651.21

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Solution

The fourth proportional to 86,821.56, 130,199.22 and 30,651.21 is: 45,965.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,821.56 : 130,199.22 = 30,651.21 : x
  2. Step 2: Convert to fraction form
    86,821.56/130,199.22 = 30,651.21/x
  3. Step 3: Cross multiply
    86,821.56x = 130,199.22 × 30,651.21
  4. Step 4: Simplify right side
    86,821.56x = 3,990,763,634.06
  5. Step 5: Solve for x
    x = 3,990,763,634.06/86,821.56
  6. Step 6: Final answer
    x = 45,965.12

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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.