Home / 86,813.36-119,856.27-66,631.60

Finding the Fourth Proportional to 86,813.36, 119,856.27 and 66,631.60

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Solution

The fourth proportional to 86,813.36, 119,856.27 and 66,631.60 is: 91,992.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,813.36 : 119,856.27 = 66,631.60 : x
  2. Step 2: Convert to fraction form
    86,813.36/119,856.27 = 66,631.60/x
  3. Step 3: Cross multiply
    86,813.36x = 119,856.27 × 66,631.60
  4. Step 4: Simplify right side
    86,813.36x = 7,986,215,040.13
  5. Step 5: Solve for x
    x = 7,986,215,040.13/86,813.36
  6. Step 6: Final answer
    x = 91,992.93

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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.