Home / 86,911.41-119,939.45-56,716.05

Finding the Fourth Proportional to 86,911.41, 119,939.45 and 56,716.05

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Solution

The fourth proportional to 86,911.41, 119,939.45 and 56,716.05 is: 78,269.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,911.41 : 119,939.45 = 56,716.05 : x
  2. Step 2: Convert to fraction form
    86,911.41/119,939.45 = 56,716.05/x
  3. Step 3: Cross multiply
    86,911.41x = 119,939.45 × 56,716.05
  4. Step 4: Simplify right side
    86,911.41x = 6,802,491,559.59
  5. Step 5: Solve for x
    x = 6,802,491,559.59/86,911.41
  6. Step 6: Final answer
    x = 78,269.26

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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.