Home / 56,136.32-77,336.53-39,109.77

Finding the Fourth Proportional to 56,136.32, 77,336.53 and 39,109.77

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Solution

The fourth proportional to 56,136.32, 77,336.53 and 39,109.77 is: 53,879.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,136.32 : 77,336.53 = 39,109.77 : x
  2. Step 2: Convert to fraction form
    56,136.32/77,336.53 = 39,109.77/x
  3. Step 3: Cross multiply
    56,136.32x = 77,336.53 × 39,109.77
  4. Step 4: Simplify right side
    56,136.32x = 3,024,613,900.90
  5. Step 5: Solve for x
    x = 3,024,613,900.90/56,136.32
  6. Step 6: Final answer
    x = 53,879.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.