Home / 55,328.70-82,972.69-19,780.44

Finding the Fourth Proportional to 55,328.70, 82,972.69 and 19,780.44

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Solution

The fourth proportional to 55,328.70, 82,972.69 and 19,780.44 is: 29,663.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,328.70 : 82,972.69 = 19,780.44 : x
  2. Step 2: Convert to fraction form
    55,328.70/82,972.69 = 19,780.44/x
  3. Step 3: Cross multiply
    55,328.70x = 82,972.69 × 19,780.44
  4. Step 4: Simplify right side
    55,328.70x = 1,641,235,955.58
  5. Step 5: Solve for x
    x = 1,641,235,955.58/55,328.70
  6. Step 6: Final answer
    x = 29,663.37

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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.