Home / 86,019.14-129,028.70-26,859.88

Finding the Fourth Proportional to 86,019.14, 129,028.70 and 26,859.88

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Solution

The fourth proportional to 86,019.14, 129,028.70 and 26,859.88 is: 40,289.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,019.14 : 129,028.70 = 26,859.88 : x
  2. Step 2: Convert to fraction form
    86,019.14/129,028.70 = 26,859.88/x
  3. Step 3: Cross multiply
    86,019.14x = 129,028.70 × 26,859.88
  4. Step 4: Simplify right side
    86,019.14x = 3,465,695,113.01
  5. Step 5: Solve for x
    x = 3,465,695,113.01/86,019.14
  6. Step 6: Final answer
    x = 40,289.81

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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.