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Finding the Fourth Proportional to 37,785, 56,679.84 and 11,491.68

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Solution

The fourth proportional to 37,785, 56,679.84 and 11,491.68 is: 17,238.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,785 : 56,679.84 = 11,491.68 : x
  2. Step 2: Convert to fraction form
    37,785/56,679.84 = 11,491.68/x
  3. Step 3: Cross multiply
    37,785x = 56,679.84 × 11,491.68
  4. Step 4: Simplify right side
    37,785x = 651,346,583.73
  5. Step 5: Solve for x
    x = 651,346,583.73/37,785
  6. Step 6: Final answer
    x = 17,238.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.