Home / 52,579.80-78,891.30-19,315.80

Finding the Fourth Proportional to 52,579.80, 78,891.30 and 19,315.80

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Solution

The fourth proportional to 52,579.80, 78,891.30 and 19,315.80 is: 28,981.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,579.80 : 78,891.30 = 19,315.80 : x
  2. Step 2: Convert to fraction form
    52,579.80/78,891.30 = 19,315.80/x
  3. Step 3: Cross multiply
    52,579.80x = 78,891.30 × 19,315.80
  4. Step 4: Simplify right side
    52,579.80x = 1,523,848,572.54
  5. Step 5: Solve for x
    x = 1,523,848,572.54/52,579.80
  6. Step 6: Final answer
    x = 28,981.64

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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.