Home / 86,912.16-119,940.48-56,716.80

Finding the Fourth Proportional to 86,912.16, 119,940.48 and 56,716.80

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Solution

The fourth proportional to 86,912.16, 119,940.48 and 56,716.80 is: 78,270.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,912.16 : 119,940.48 = 56,716.80 : x
  2. Step 2: Convert to fraction form
    86,912.16/119,940.48 = 56,716.80/x
  3. Step 3: Cross multiply
    86,912.16x = 119,940.48 × 56,716.80
  4. Step 4: Simplify right side
    86,912.16x = 6,802,640,216.06
  5. Step 5: Solve for x
    x = 6,802,640,216.06/86,912.16
  6. Step 6: Final answer
    x = 78,270.29

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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.