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Finding the Fourth Proportional to 55,363.44, 83,043 and 15,920.40

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Solution

The fourth proportional to 55,363.44, 83,043 and 15,920.40 is: 23,879.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,363.44 : 83,043 = 15,920.40 : x
  2. Step 2: Convert to fraction form
    55,363.44/83,043 = 15,920.40/x
  3. Step 3: Cross multiply
    55,363.44x = 83,043 × 15,920.40
  4. Step 4: Simplify right side
    55,363.44x = 1,322,077,777.20
  5. Step 5: Solve for x
    x = 1,322,077,777.20/55,363.44
  6. Step 6: Final answer
    x = 23,879.98

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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.