Home / 80,776,136.85-121,121,689.99-55,224,453.57

Finding the Fourth Proportional to 80,776,136.85, 121,121,689.99 and 55,224,453.57

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Solution

The fourth proportional to 80,776,136.85, 121,121,689.99 and 55,224,453.57 is: 82,807,613.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,776,136.85 : 121,121,689.99 = 55,224,453.57 : x
  2. Step 2: Convert to fraction form
    80,776,136.85/121,121,689.99 = 55,224,453.57/x
  3. Step 3: Cross multiply
    80,776,136.85x = 121,121,689.99 × 55,224,453.57
  4. Step 4: Simplify right side
    80,776,136.85x = 6,688,879,145,172,689
  5. Step 5: Solve for x
    x = 6,688,879,145,172,689/80,776,136.85
  6. Step 6: Final answer
    x = 82,807,613.81

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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.