Home / 86,019.03-129,028.55-26,859.77

Finding the Fourth Proportional to 86,019.03, 129,028.55 and 26,859.77

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Solution

The fourth proportional to 86,019.03, 129,028.55 and 26,859.77 is: 40,289.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,019.03 : 129,028.55 = 26,859.77 : x
  2. Step 2: Convert to fraction form
    86,019.03/129,028.55 = 26,859.77/x
  3. Step 3: Cross multiply
    86,019.03x = 129,028.55 × 26,859.77
  4. Step 4: Simplify right side
    86,019.03x = 3,465,676,880.85
  5. Step 5: Solve for x
    x = 3,465,676,880.85/86,019.03
  6. Step 6: Final answer
    x = 40,289.65

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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.