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Finding the Fourth Proportional to 86,891.32, 119,922.84 and 55,063.12

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Solution

The fourth proportional to 86,891.32, 119,922.84 and 55,063.12 is: 75,995.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,891.32 : 119,922.84 = 55,063.12 : x
  2. Step 2: Convert to fraction form
    86,891.32/119,922.84 = 55,063.12/x
  3. Step 3: Cross multiply
    86,891.32x = 119,922.84 × 55,063.12
  4. Step 4: Simplify right side
    86,891.32x = 6,603,325,729.66
  5. Step 5: Solve for x
    x = 6,603,325,729.66/86,891.32
  6. Step 6: Final answer
    x = 75,995.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.