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Finding the Fourth Proportional to 99,090, 148,635 and 33,426

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Solution

The fourth proportional to 99,090, 148,635 and 33,426 is: 50,139

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,090 : 148,635 = 33,426 : x
  2. Step 2: Convert to fraction form
    99,090/148,635 = 33,426/x
  3. Step 3: Cross multiply
    99,090x = 148,635 × 33,426
  4. Step 4: Simplify right side
    99,090x = 4,968,273,510
  5. Step 5: Solve for x
    x = 4,968,273,510/99,090
  6. Step 6: Final answer
    x = 50,139

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.