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Finding the Fourth Proportional to 55,498.70, 76,583.84 and 31,620.71

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Solution

The fourth proportional to 55,498.70, 76,583.84 and 31,620.71 is: 43,634.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,498.70 : 76,583.84 = 31,620.71 : x
  2. Step 2: Convert to fraction form
    55,498.70/76,583.84 = 31,620.71/x
  3. Step 3: Cross multiply
    55,498.70x = 76,583.84 × 31,620.71
  4. Step 4: Simplify right side
    55,498.70x = 2,421,634,854.30
  5. Step 5: Solve for x
    x = 2,421,634,854.30/55,498.70
  6. Step 6: Final answer
    x = 43,634.09

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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.