Home / 35,449.40-53,181.30-12,078.20

Finding the Fourth Proportional to 35,449.40, 53,181.30 and 12,078.20

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Solution

The fourth proportional to 35,449.40, 53,181.30 and 12,078.20 is: 18,119.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,449.40 : 53,181.30 = 12,078.20 : x
  2. Step 2: Convert to fraction form
    35,449.40/53,181.30 = 12,078.20/x
  3. Step 3: Cross multiply
    35,449.40x = 53,181.30 × 12,078.20
  4. Step 4: Simplify right side
    35,449.40x = 642,334,377.66
  5. Step 5: Solve for x
    x = 642,334,377.66/35,449.40
  6. Step 6: Final answer
    x = 18,119.75

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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.