Home / 86,740.81-119,770.16-66,565.73

Finding the Fourth Proportional to 86,740.81, 119,770.16 and 66,565.73

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Solution

The fourth proportional to 86,740.81, 119,770.16 and 66,565.73 is: 91,912.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,740.81 : 119,770.16 = 66,565.73 : x
  2. Step 2: Convert to fraction form
    86,740.81/119,770.16 = 66,565.73/x
  3. Step 3: Cross multiply
    86,740.81x = 119,770.16 × 66,565.73
  4. Step 4: Simplify right side
    86,740.81x = 7,972,588,099.21
  5. Step 5: Solve for x
    x = 7,972,588,099.21/86,740.81
  6. Step 6: Final answer
    x = 91,912.77

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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.