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Finding the Fourth Proportional to 51,550.80, 77,289.30 and 19,933.80

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Solution

The fourth proportional to 51,550.80, 77,289.30 and 19,933.80 is: 29,886.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,550.80 : 77,289.30 = 19,933.80 : x
  2. Step 2: Convert to fraction form
    51,550.80/77,289.30 = 19,933.80/x
  3. Step 3: Cross multiply
    51,550.80x = 77,289.30 × 19,933.80
  4. Step 4: Simplify right side
    51,550.80x = 1,540,669,448.34
  5. Step 5: Solve for x
    x = 1,540,669,448.34/51,550.80
  6. Step 6: Final answer
    x = 29,886.43

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1.5x scale

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.