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Finding the Fourth Proportional to 55,449.80, 76,520.64 and 31,576.49

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Solution

The fourth proportional to 55,449.80, 76,520.64 and 31,576.49 is: 43,575.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,449.80 : 76,520.64 = 31,576.49 : x
  2. Step 2: Convert to fraction form
    55,449.80/76,520.64 = 31,576.49/x
  3. Step 3: Cross multiply
    55,449.80x = 76,520.64 × 31,576.49
  4. Step 4: Simplify right side
    55,449.80x = 2,416,252,841.15
  5. Step 5: Solve for x
    x = 2,416,252,841.15/55,449.80
  6. Step 6: Final answer
    x = 43,575.50

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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.