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Finding the Fourth Proportional to 60,666, 90,999 and 16,890

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Solution

The fourth proportional to 60,666, 90,999 and 16,890 is: 25,335

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,666 : 90,999 = 16,890 : x
  2. Step 2: Convert to fraction form
    60,666/90,999 = 16,890/x
  3. Step 3: Cross multiply
    60,666x = 90,999 × 16,890
  4. Step 4: Simplify right side
    60,666x = 1,536,973,110
  5. Step 5: Solve for x
    x = 1,536,973,110/60,666
  6. Step 6: Final answer
    x = 25,335

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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.