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Finding the Fourth Proportional to 55,723.70, 76,900.04 and 30,573.20

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Solution

The fourth proportional to 55,723.70, 76,900.04 and 30,573.20 is: 42,191.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,723.70 : 76,900.04 = 30,573.20 : x
  2. Step 2: Convert to fraction form
    55,723.70/76,900.04 = 30,573.20/x
  3. Step 3: Cross multiply
    55,723.70x = 76,900.04 × 30,573.20
  4. Step 4: Simplify right side
    55,723.70x = 2,351,080,302.93
  5. Step 5: Solve for x
    x = 2,351,080,302.93/55,723.70
  6. Step 6: Final answer
    x = 42,191.75

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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.