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Finding the Fourth Proportional to 56,178.99, 84,268.81 and 18,738.97

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Solution

The fourth proportional to 56,178.99, 84,268.81 and 18,738.97 is: 28,108.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,178.99 : 84,268.81 = 18,738.97 : x
  2. Step 2: Convert to fraction form
    56,178.99/84,268.81 = 18,738.97/x
  3. Step 3: Cross multiply
    56,178.99x = 84,268.81 × 18,738.97
  4. Step 4: Simplify right side
    56,178.99x = 1,579,110,281.18
  5. Step 5: Solve for x
    x = 1,579,110,281.18/56,178.99
  6. Step 6: Final answer
    x = 28,108.56

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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.