Home / 55,961.12-77,231.04-30,815.36

Finding the Fourth Proportional to 55,961.12, 77,231.04 and 30,815.36

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Solution

The fourth proportional to 55,961.12, 77,231.04 and 30,815.36 is: 42,527.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,961.12 : 77,231.04 = 30,815.36 : x
  2. Step 2: Convert to fraction form
    55,961.12/77,231.04 = 30,815.36/x
  3. Step 3: Cross multiply
    55,961.12x = 77,231.04 × 30,815.36
  4. Step 4: Simplify right side
    55,961.12x = 2,379,902,300.77
  5. Step 5: Solve for x
    x = 2,379,902,300.77/55,961.12
  6. Step 6: Final answer
    x = 42,527.78

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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.