Home / 79,421.43-119,136.23-20,257.62

Finding the Fourth Proportional to 79,421.43, 119,136.23 and 20,257.62

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Solution

The fourth proportional to 79,421.43, 119,136.23 and 20,257.62 is: 30,387.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,421.43 : 119,136.23 = 20,257.62 : x
  2. Step 2: Convert to fraction form
    79,421.43/119,136.23 = 20,257.62/x
  3. Step 3: Cross multiply
    79,421.43x = 119,136.23 × 20,257.62
  4. Step 4: Simplify right side
    79,421.43x = 2,413,416,475.57
  5. Step 5: Solve for x
    x = 2,413,416,475.57/79,421.43
  6. Step 6: Final answer
    x = 30,387.47

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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.