Home / 45,361.12-68,045.52-12,081.20

Finding the Fourth Proportional to 45,361.12, 68,045.52 and 12,081.20

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Solution

The fourth proportional to 45,361.12, 68,045.52 and 12,081.20 is: 18,122.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,361.12 : 68,045.52 = 12,081.20 : x
  2. Step 2: Convert to fraction form
    45,361.12/68,045.52 = 12,081.20/x
  3. Step 3: Cross multiply
    45,361.12x = 68,045.52 × 12,081.20
  4. Step 4: Simplify right side
    45,361.12x = 822,071,536.22
  5. Step 5: Solve for x
    x = 822,071,536.22/45,361.12
  6. Step 6: Final answer
    x = 18,122.82

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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.