Home / 275,511.24-413,212.08-75,780

Finding the Fourth Proportional to 275,511.24, 413,212.08 and 75,780

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Solution

The fourth proportional to 275,511.24, 413,212.08 and 75,780 is: 113,654.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,511.24 : 413,212.08 = 75,780 : x
  2. Step 2: Convert to fraction form
    275,511.24/413,212.08 = 75,780/x
  3. Step 3: Cross multiply
    275,511.24x = 413,212.08 × 75,780
  4. Step 4: Simplify right side
    275,511.24x = 31,313,211,422.40
  5. Step 5: Solve for x
    x = 31,313,211,422.40/275,511.24
  6. Step 6: Final answer
    x = 113,654.93

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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.