Home / 43,136.40-64,682.72-19,742.80

Finding the Fourth Proportional to 43,136.40, 64,682.72 and 19,742.80

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Solution

The fourth proportional to 43,136.40, 64,682.72 and 19,742.80 is: 29,604.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,136.40 : 64,682.72 = 19,742.80 : x
  2. Step 2: Convert to fraction form
    43,136.40/64,682.72 = 19,742.80/x
  3. Step 3: Cross multiply
    43,136.40x = 64,682.72 × 19,742.80
  4. Step 4: Simplify right side
    43,136.40x = 1,277,018,004.42
  5. Step 5: Solve for x
    x = 1,277,018,004.42/43,136.40
  6. Step 6: Final answer
    x = 29,604.19

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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.