Home / 55,185.45-76,153.67-31,311.61

Finding the Fourth Proportional to 55,185.45, 76,153.67 and 31,311.61

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Solution

The fourth proportional to 55,185.45, 76,153.67 and 31,311.61 is: 43,208.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,185.45 : 76,153.67 = 31,311.61 : x
  2. Step 2: Convert to fraction form
    55,185.45/76,153.67 = 31,311.61/x
  3. Step 3: Cross multiply
    55,185.45x = 76,153.67 × 31,311.61
  4. Step 4: Simplify right side
    55,185.45x = 2,384,494,015.11
  5. Step 5: Solve for x
    x = 2,384,494,015.11/55,185.45
  6. Step 6: Final answer
    x = 43,208.74

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1.5x scale

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.