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Finding the Fourth Proportional to 56,005.20, 84,007.80 and 50,821.20

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Solution

The fourth proportional to 56,005.20, 84,007.80 and 50,821.20 is: 76,231.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,005.20 : 84,007.80 = 50,821.20 : x
  2. Step 2: Convert to fraction form
    56,005.20/84,007.80 = 50,821.20/x
  3. Step 3: Cross multiply
    56,005.20x = 84,007.80 × 50,821.20
  4. Step 4: Simplify right side
    56,005.20x = 4,269,377,205.36
  5. Step 5: Solve for x
    x = 4,269,377,205.36/56,005.20
  6. Step 6: Final answer
    x = 76,231.80

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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.