Home / 90,764.40-136,167.63-30,789.69

Finding the Fourth Proportional to 90,764.40, 136,167.63 and 30,789.69

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Solution

The fourth proportional to 90,764.40, 136,167.63 and 30,789.69 is: 46,191.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,764.40 : 136,167.63 = 30,789.69 : x
  2. Step 2: Convert to fraction form
    90,764.40/136,167.63 = 30,789.69/x
  3. Step 3: Cross multiply
    90,764.40x = 136,167.63 × 30,789.69
  4. Step 4: Simplify right side
    90,764.40x = 4,192,559,115.73
  5. Step 5: Solve for x
    x = 4,192,559,115.73/90,764.40
  6. Step 6: Final answer
    x = 46,191.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.