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Finding the Fourth Proportional to 74,443.84, 102,730.08 and 40,907.68

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Solution

The fourth proportional to 74,443.84, 102,730.08 and 40,907.68 is: 56,451.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,443.84 : 102,730.08 = 40,907.68 : x
  2. Step 2: Convert to fraction form
    74,443.84/102,730.08 = 40,907.68/x
  3. Step 3: Cross multiply
    74,443.84x = 102,730.08 × 40,907.68
  4. Step 4: Simplify right side
    74,443.84x = 4,202,449,239.01
  5. Step 5: Solve for x
    x = 4,202,449,239.01/74,443.84
  6. Step 6: Final answer
    x = 56,451.27

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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.