Home / 51,087.80-76,631.70-45,450.20

Finding the Fourth Proportional to 51,087.80, 76,631.70 and 45,450.20

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Solution

The fourth proportional to 51,087.80, 76,631.70 and 45,450.20 is: 68,175.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,087.80 : 76,631.70 = 45,450.20 : x
  2. Step 2: Convert to fraction form
    51,087.80/76,631.70 = 45,450.20/x
  3. Step 3: Cross multiply
    51,087.80x = 76,631.70 × 45,450.20
  4. Step 4: Simplify right side
    51,087.80x = 3,482,926,091.34
  5. Step 5: Solve for x
    x = 3,482,926,091.34/51,087.80
  6. Step 6: Final answer
    x = 68,175.30

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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.