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Finding the Fourth Proportional to 74,363.62, 102,621.07 and 40,371.37

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Solution

The fourth proportional to 74,363.62, 102,621.07 and 40,371.37 is: 55,712.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,363.62 : 102,621.07 = 40,371.37 : x
  2. Step 2: Convert to fraction form
    74,363.62/102,621.07 = 40,371.37/x
  3. Step 3: Cross multiply
    74,363.62x = 102,621.07 × 40,371.37
  4. Step 4: Simplify right side
    74,363.62x = 4,142,953,186.77
  5. Step 5: Solve for x
    x = 4,142,953,186.77/74,363.62
  6. Step 6: Final answer
    x = 55,712.10

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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.