Home / 55,872.15-77,102.43-30,379.02

Finding the Fourth Proportional to 55,872.15, 77,102.43 and 30,379.02

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Solution

The fourth proportional to 55,872.15, 77,102.43 and 30,379.02 is: 41,922.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,872.15 : 77,102.43 = 30,379.02 : x
  2. Step 2: Convert to fraction form
    55,872.15/77,102.43 = 30,379.02/x
  3. Step 3: Cross multiply
    55,872.15x = 77,102.43 × 30,379.02
  4. Step 4: Simplify right side
    55,872.15x = 2,342,296,263.02
  5. Step 5: Solve for x
    x = 2,342,296,263.02/55,872.15
  6. Step 6: Final answer
    x = 41,922.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.