Home / 57,136.90-85,652.85-19,688.07

Finding the Fourth Proportional to 57,136.90, 85,652.85 and 19,688.07

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Solution

The fourth proportional to 57,136.90, 85,652.85 and 19,688.07 is: 29,514.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,136.90 : 85,652.85 = 19,688.07 : x
  2. Step 2: Convert to fraction form
    57,136.90/85,652.85 = 19,688.07/x
  3. Step 3: Cross multiply
    57,136.90x = 85,652.85 × 19,688.07
  4. Step 4: Simplify right side
    57,136.90x = 1,686,339,306.50
  5. Step 5: Solve for x
    x = 1,686,339,306.50/57,136.90
  6. Step 6: Final answer
    x = 29,514.01

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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.