Home / 53,821.05-80,721.86-20,533.70

Finding the Fourth Proportional to 53,821.05, 80,721.86 and 20,533.70

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Solution

The fourth proportional to 53,821.05, 80,721.86 and 20,533.70 is: 30,796.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,821.05 : 80,721.86 = 20,533.70 : x
  2. Step 2: Convert to fraction form
    53,821.05/80,721.86 = 20,533.70/x
  3. Step 3: Cross multiply
    53,821.05x = 80,721.86 × 20,533.70
  4. Step 4: Simplify right side
    53,821.05x = 1,657,517,950.40
  5. Step 5: Solve for x
    x = 1,657,517,950.40/53,821.05
  6. Step 6: Final answer
    x = 30,796.83

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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.