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Finding the Fourth Proportional to 55,891.50, 83,850.21 and 18,955.50

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Solution

The fourth proportional to 55,891.50, 83,850.21 and 18,955.50 is: 28,437.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,891.50 : 83,850.21 = 18,955.50 : x
  2. Step 2: Convert to fraction form
    55,891.50/83,850.21 = 18,955.50/x
  3. Step 3: Cross multiply
    55,891.50x = 83,850.21 × 18,955.50
  4. Step 4: Simplify right side
    55,891.50x = 1,589,422,655.66
  5. Step 5: Solve for x
    x = 1,589,422,655.66/55,891.50
  6. Step 6: Final answer
    x = 28,437.65

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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.