Home / 55,890-83,837.52-20,820.96

Finding the Fourth Proportional to 55,890, 83,837.52 and 20,820.96

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Solution

The fourth proportional to 55,890, 83,837.52 and 20,820.96 is: 31,232.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,890 : 83,837.52 = 20,820.96 : x
  2. Step 2: Convert to fraction form
    55,890/83,837.52 = 20,820.96/x
  3. Step 3: Cross multiply
    55,890x = 83,837.52 × 20,820.96
  4. Step 4: Simplify right side
    55,890x = 1,745,577,650.42
  5. Step 5: Solve for x
    x = 1,745,577,650.42/55,890
  6. Step 6: Final answer
    x = 31,232.38

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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.