Home / 86,570.46-129,863.09-30,405.68

Finding the Fourth Proportional to 86,570.46, 129,863.09 and 30,405.68

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Solution

The fourth proportional to 86,570.46, 129,863.09 and 30,405.68 is: 45,611.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,570.46 : 129,863.09 = 30,405.68 : x
  2. Step 2: Convert to fraction form
    86,570.46/129,863.09 = 30,405.68/x
  3. Step 3: Cross multiply
    86,570.46x = 129,863.09 × 30,405.68
  4. Step 4: Simplify right side
    86,570.46x = 3,948,574,757.01
  5. Step 5: Solve for x
    x = 3,948,574,757.01/86,570.46
  6. Step 6: Final answer
    x = 45,611.11

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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.