Home / 75,281.34-112,921.44-19,121.61

Finding the Fourth Proportional to 75,281.34, 112,921.44 and 19,121.61

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Solution

The fourth proportional to 75,281.34, 112,921.44 and 19,121.61 is: 28,682.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,281.34 : 112,921.44 = 19,121.61 : x
  2. Step 2: Convert to fraction form
    75,281.34/112,921.44 = 19,121.61/x
  3. Step 3: Cross multiply
    75,281.34x = 112,921.44 × 19,121.61
  4. Step 4: Simplify right side
    75,281.34x = 2,159,239,736.32
  5. Step 5: Solve for x
    x = 2,159,239,736.32/75,281.34
  6. Step 6: Final answer
    x = 28,682.27

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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.