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Finding the Fourth Proportional to 74,482.61, 102,786.44 and 40,491.36

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Solution

The fourth proportional to 74,482.61, 102,786.44 and 40,491.36 is: 55,878.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,482.61 : 102,786.44 = 40,491.36 : x
  2. Step 2: Convert to fraction form
    74,482.61/102,786.44 = 40,491.36/x
  3. Step 3: Cross multiply
    74,482.61x = 102,786.44 × 40,491.36
  4. Step 4: Simplify right side
    74,482.61x = 4,161,962,542.70
  5. Step 5: Solve for x
    x = 4,161,962,542.70/74,482.61
  6. Step 6: Final answer
    x = 55,878.32

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.