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Finding the Fourth Proportional to 123,853.80, 185,789.81 and 38,453.47

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Solution

The fourth proportional to 123,853.80, 185,789.81 and 38,453.47 is: 57,683.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,853.80 : 185,789.81 = 38,453.47 : x
  2. Step 2: Convert to fraction form
    123,853.80/185,789.81 = 38,453.47/x
  3. Step 3: Cross multiply
    123,853.80x = 185,789.81 × 38,453.47
  4. Step 4: Simplify right side
    123,853.80x = 7,144,262,885.14
  5. Step 5: Solve for x
    x = 7,144,262,885.14/123,853.80
  6. Step 6: Final answer
    x = 57,683.03

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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.