Home / 86,583.40-129,842.70-30,401.80

Finding the Fourth Proportional to 86,583.40, 129,842.70 and 30,401.80

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Solution

The fourth proportional to 86,583.40, 129,842.70 and 30,401.80 is: 45,591.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,583.40 : 129,842.70 = 30,401.80 : x
  2. Step 2: Convert to fraction form
    86,583.40/129,842.70 = 30,401.80/x
  3. Step 3: Cross multiply
    86,583.40x = 129,842.70 × 30,401.80
  4. Step 4: Simplify right side
    86,583.40x = 3,947,451,796.86
  5. Step 5: Solve for x
    x = 3,947,451,796.86/86,583.40
  6. Step 6: Final answer
    x = 45,591.32

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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.