Home / 80,721.34-111,396-44,912.86

Finding the Fourth Proportional to 80,721.34, 111,396 and 44,912.86

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Solution

The fourth proportional to 80,721.34, 111,396 and 44,912.86 is: 61,980.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,721.34 : 111,396 = 44,912.86 : x
  2. Step 2: Convert to fraction form
    80,721.34/111,396 = 44,912.86/x
  3. Step 3: Cross multiply
    80,721.34x = 111,396 × 44,912.86
  4. Step 4: Simplify right side
    80,721.34x = 5,003,112,952.56
  5. Step 5: Solve for x
    x = 5,003,112,952.56/80,721.34
  6. Step 6: Final answer
    x = 61,980.05

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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.