Home / 72,809.12-109,121.44-35,377.76

Finding the Fourth Proportional to 72,809.12, 109,121.44 and 35,377.76

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Solution

The fourth proportional to 72,809.12, 109,121.44 and 35,377.76 is: 53,021.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,809.12 : 109,121.44 = 35,377.76 : x
  2. Step 2: Convert to fraction form
    72,809.12/109,121.44 = 35,377.76/x
  3. Step 3: Cross multiply
    72,809.12x = 109,121.44 × 35,377.76
  4. Step 4: Simplify right side
    72,809.12x = 3,860,472,115.17
  5. Step 5: Solve for x
    x = 3,860,472,115.17/72,809.12
  6. Step 6: Final answer
    x = 53,021.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.