Home / 80,929.45-111,676.93-45,121.42

Finding the Fourth Proportional to 80,929.45, 111,676.93 and 45,121.42

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Solution

The fourth proportional to 80,929.45, 111,676.93 and 45,121.42 is: 62,264.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,929.45 : 111,676.93 = 45,121.42 : x
  2. Step 2: Convert to fraction form
    80,929.45/111,676.93 = 45,121.42/x
  3. Step 3: Cross multiply
    80,929.45x = 111,676.93 × 45,121.42
  4. Step 4: Simplify right side
    80,929.45x = 5,039,021,662.84
  5. Step 5: Solve for x
    x = 5,039,021,662.84/80,929.45
  6. Step 6: Final answer
    x = 62,264.38

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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.