Home / 74,748.68-112,136.84-21,438.42

Finding the Fourth Proportional to 74,748.68, 112,136.84 and 21,438.42

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Solution

The fourth proportional to 74,748.68, 112,136.84 and 21,438.42 is: 32,161.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,748.68 : 112,136.84 = 21,438.42 : x
  2. Step 2: Convert to fraction form
    74,748.68/112,136.84 = 21,438.42/x
  3. Step 3: Cross multiply
    74,748.68x = 112,136.84 × 21,438.42
  4. Step 4: Simplify right side
    74,748.68x = 2,404,036,673.39
  5. Step 5: Solve for x
    x = 2,404,036,673.39/74,748.68
  6. Step 6: Final answer
    x = 32,161.59

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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.