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Finding the Fourth Proportional to 73,638, 101,620.44 and 40,104

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Solution

The fourth proportional to 73,638, 101,620.44 and 40,104 is: 55,343.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,638 : 101,620.44 = 40,104 : x
  2. Step 2: Convert to fraction form
    73,638/101,620.44 = 40,104/x
  3. Step 3: Cross multiply
    73,638x = 101,620.44 × 40,104
  4. Step 4: Simplify right side
    73,638x = 4,075,386,125.76
  5. Step 5: Solve for x
    x = 4,075,386,125.76/73,638
  6. Step 6: Final answer
    x = 55,343.52

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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.