Home / 56,919.20-85,389.87-21,856.28

Finding the Fourth Proportional to 56,919.20, 85,389.87 and 21,856.28

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Solution

The fourth proportional to 56,919.20, 85,389.87 and 21,856.28 is: 32,788.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,919.20 : 85,389.87 = 21,856.28 : x
  2. Step 2: Convert to fraction form
    56,919.20/85,389.87 = 21,856.28/x
  3. Step 3: Cross multiply
    56,919.20x = 85,389.87 × 21,856.28
  4. Step 4: Simplify right side
    56,919.20x = 1,866,304,907.88
  5. Step 5: Solve for x
    x = 1,866,304,907.88/56,919.20
  6. Step 6: Final answer
    x = 32,788.67

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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.