Home / 86,439.18-119,241.60-57,749.67

Finding the Fourth Proportional to 86,439.18, 119,241.60 and 57,749.67

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Solution

The fourth proportional to 86,439.18, 119,241.60 and 57,749.67 is: 79,664.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,439.18 : 119,241.60 = 57,749.67 : x
  2. Step 2: Convert to fraction form
    86,439.18/119,241.60 = 57,749.67/x
  3. Step 3: Cross multiply
    86,439.18x = 119,241.60 × 57,749.67
  4. Step 4: Simplify right side
    86,439.18x = 6,886,162,833.71
  5. Step 5: Solve for x
    x = 6,886,162,833.71/86,439.18
  6. Step 6: Final answer
    x = 79,664.83

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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.