Home / 57,136.19-85,704.30-19,706.99

Finding the Fourth Proportional to 57,136.19, 85,704.30 and 19,706.99

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Solution

The fourth proportional to 57,136.19, 85,704.30 and 19,706.99 is: 29,560.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,136.19 : 85,704.30 = 19,706.99 : x
  2. Step 2: Convert to fraction form
    57,136.19/85,704.30 = 19,706.99/x
  3. Step 3: Cross multiply
    57,136.19x = 85,704.30 × 19,706.99
  4. Step 4: Simplify right side
    57,136.19x = 1,688,973,783.06
  5. Step 5: Solve for x
    x = 1,688,973,783.06/57,136.19
  6. Step 6: Final answer
    x = 29,560.49

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Double scale
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Similar ratio
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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.