Home / 86,910.61-119,990.83-66,727.33

Finding the Fourth Proportional to 86,910.61, 119,990.83 and 66,727.33

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Solution

The fourth proportional to 86,910.61, 119,990.83 and 66,727.33 is: 92,125.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,910.61 : 119,990.83 = 66,727.33 : x
  2. Step 2: Convert to fraction form
    86,910.61/119,990.83 = 66,727.33/x
  3. Step 3: Cross multiply
    86,910.61x = 119,990.83 × 66,727.33
  4. Step 4: Simplify right side
    86,910.61x = 8,006,667,943.78
  5. Step 5: Solve for x
    x = 8,006,667,943.78/86,910.61
  6. Step 6: Final answer
    x = 92,125.32

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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.