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Finding the Fourth Proportional to 56,817.92, 85,164.96 and 21,742.40

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Solution

The fourth proportional to 56,817.92, 85,164.96 and 21,742.40 is: 32,589.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,817.92 : 85,164.96 = 21,742.40 : x
  2. Step 2: Convert to fraction form
    56,817.92/85,164.96 = 21,742.40/x
  3. Step 3: Cross multiply
    56,817.92x = 85,164.96 × 21,742.40
  4. Step 4: Simplify right side
    56,817.92x = 1,851,690,626.30
  5. Step 5: Solve for x
    x = 1,851,690,626.30/56,817.92
  6. Step 6: Final answer
    x = 32,589.91

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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.