Home / 70,961.21-106,442.25-21,041.78

Finding the Fourth Proportional to 70,961.21, 106,442.25 and 21,041.78

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Solution

The fourth proportional to 70,961.21, 106,442.25 and 21,041.78 is: 31,562.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,961.21 : 106,442.25 = 21,041.78 : x
  2. Step 2: Convert to fraction form
    70,961.21/106,442.25 = 21,041.78/x
  3. Step 3: Cross multiply
    70,961.21x = 106,442.25 × 21,041.78
  4. Step 4: Simplify right side
    70,961.21x = 2,239,734,407.21
  5. Step 5: Solve for x
    x = 2,239,734,407.21/70,961.21
  6. Step 6: Final answer
    x = 31,562.80

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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.