Home / 55,991.20-77,266-30,840.64

Finding the Fourth Proportional to 55,991.20, 77,266 and 30,840.64

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Solution

The fourth proportional to 55,991.20, 77,266 and 30,840.64 is: 42,559.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,991.20 : 77,266 = 30,840.64 : x
  2. Step 2: Convert to fraction form
    55,991.20/77,266 = 30,840.64/x
  3. Step 3: Cross multiply
    55,991.20x = 77,266 × 30,840.64
  4. Step 4: Simplify right side
    55,991.20x = 2,382,932,890.24
  5. Step 5: Solve for x
    x = 2,382,932,890.24/55,991.20
  6. Step 6: Final answer
    x = 42,559.06

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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.