Home / 81,020.57-111,814.25-47,048.67

Finding the Fourth Proportional to 81,020.57, 111,814.25 and 47,048.67

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Solution

The fourth proportional to 81,020.57, 111,814.25 and 47,048.67 is: 64,930.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,020.57 : 111,814.25 = 47,048.67 : x
  2. Step 2: Convert to fraction form
    81,020.57/111,814.25 = 47,048.67/x
  3. Step 3: Cross multiply
    81,020.57x = 111,814.25 × 47,048.67
  4. Step 4: Simplify right side
    81,020.57x = 5,260,711,514.30
  5. Step 5: Solve for x
    x = 5,260,711,514.30/81,020.57
  6. Step 6: Final answer
    x = 64,930.57

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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.