Home / 52,511.70-78,779.30-19,231.10

Finding the Fourth Proportional to 52,511.70, 78,779.30 and 19,231.10

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Solution

The fourth proportional to 52,511.70, 78,779.30 and 19,231.10 is: 28,850.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,511.70 : 78,779.30 = 19,231.10 : x
  2. Step 2: Convert to fraction form
    52,511.70/78,779.30 = 19,231.10/x
  3. Step 3: Cross multiply
    52,511.70x = 78,779.30 × 19,231.10
  4. Step 4: Simplify right side
    52,511.70x = 1,515,012,596.23
  5. Step 5: Solve for x
    x = 1,515,012,596.23/52,511.70
  6. Step 6: Final answer
    x = 28,850.95

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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.