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Finding the Fourth Proportional to 73,018.43, 100,765.40 and 39,484.43

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Solution

The fourth proportional to 73,018.43, 100,765.40 and 39,484.43 is: 54,488.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,018.43 : 100,765.40 = 39,484.43 : x
  2. Step 2: Convert to fraction form
    73,018.43/100,765.40 = 39,484.43/x
  3. Step 3: Cross multiply
    73,018.43x = 100,765.40 × 39,484.43
  4. Step 4: Simplify right side
    73,018.43x = 3,978,663,681.47
  5. Step 5: Solve for x
    x = 3,978,663,681.47/73,018.43
  6. Step 6: Final answer
    x = 54,488.49

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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.