Home / 56,919.62-85,378.23-18,971.64

Finding the Fourth Proportional to 56,919.62, 85,378.23 and 18,971.64

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Solution

The fourth proportional to 56,919.62, 85,378.23 and 18,971.64 is: 28,457.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,919.62 : 85,378.23 = 18,971.64 : x
  2. Step 2: Convert to fraction form
    56,919.62/85,378.23 = 18,971.64/x
  3. Step 3: Cross multiply
    56,919.62x = 85,378.23 × 18,971.64
  4. Step 4: Simplify right side
    56,919.62x = 1,619,765,043.40
  5. Step 5: Solve for x
    x = 1,619,765,043.40/56,919.62
  6. Step 6: Final answer
    x = 28,457.06

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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.