Home / 80,945.49-111,775.28-50,782.67

Finding the Fourth Proportional to 80,945.49, 111,775.28 and 50,782.67

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Solution

The fourth proportional to 80,945.49, 111,775.28 and 50,782.67 is: 70,124.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,945.49 : 111,775.28 = 50,782.67 : x
  2. Step 2: Convert to fraction form
    80,945.49/111,775.28 = 50,782.67/x
  3. Step 3: Cross multiply
    80,945.49x = 111,775.28 × 50,782.67
  4. Step 4: Simplify right side
    80,945.49x = 5,676,246,345.61
  5. Step 5: Solve for x
    x = 5,676,246,345.61/80,945.49
  6. Step 6: Final answer
    x = 70,124.31

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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.