Home / 86,589.36-129,891.42-30,424.59

Finding the Fourth Proportional to 86,589.36, 129,891.42 and 30,424.59

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Solution

The fourth proportional to 86,589.36, 129,891.42 and 30,424.59 is: 45,639.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,589.36 : 129,891.42 = 30,424.59 : x
  2. Step 2: Convert to fraction form
    86,589.36/129,891.42 = 30,424.59/x
  3. Step 3: Cross multiply
    86,589.36x = 129,891.42 × 30,424.59
  4. Step 4: Simplify right side
    86,589.36x = 3,951,893,198.02
  5. Step 5: Solve for x
    x = 3,951,893,198.02/86,589.36
  6. Step 6: Final answer
    x = 45,639.48

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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.