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Finding the Fourth Proportional to 73,137.81, 100,930.01 and 39,603.81

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Solution

The fourth proportional to 73,137.81, 100,930.01 and 39,603.81 is: 54,653.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,137.81 : 100,930.01 = 39,603.81 : x
  2. Step 2: Convert to fraction form
    73,137.81/100,930.01 = 39,603.81/x
  3. Step 3: Cross multiply
    73,137.81x = 100,930.01 × 39,603.81
  4. Step 4: Simplify right side
    73,137.81x = 3,997,212,741.32
  5. Step 5: Solve for x
    x = 3,997,212,741.32/73,137.81
  6. Step 6: Final answer
    x = 54,653.16

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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.