Home / 55,185.92-76,157.04-31,312.64

Finding the Fourth Proportional to 55,185.92, 76,157.04 and 31,312.64

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Solution

The fourth proportional to 55,185.92, 76,157.04 and 31,312.64 is: 43,211.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,185.92 : 76,157.04 = 31,312.64 : x
  2. Step 2: Convert to fraction form
    55,185.92/76,157.04 = 31,312.64/x
  3. Step 3: Cross multiply
    55,185.92x = 76,157.04 × 31,312.64
  4. Step 4: Simplify right side
    55,185.92x = 2,384,677,976.99
  5. Step 5: Solve for x
    x = 2,384,677,976.99/55,185.92
  6. Step 6: Final answer
    x = 43,211.71

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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.