Home / 80,911.45-111,655.48-45,100.69

Finding the Fourth Proportional to 80,911.45, 111,655.48 and 45,100.69

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Solution

The fourth proportional to 80,911.45, 111,655.48 and 45,100.69 is: 62,237.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,911.45 : 111,655.48 = 45,100.69 : x
  2. Step 2: Convert to fraction form
    80,911.45/111,655.48 = 45,100.69/x
  3. Step 3: Cross multiply
    80,911.45x = 111,655.48 × 45,100.69
  4. Step 4: Simplify right side
    80,911.45x = 5,035,739,006.72
  5. Step 5: Solve for x
    x = 5,035,739,006.72/80,911.45
  6. Step 6: Final answer
    x = 62,237.66

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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.