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Finding the Fourth Proportional to 60,663, 90,994.50 and 16,887

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Solution

The fourth proportional to 60,663, 90,994.50 and 16,887 is: 25,330.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,663 : 90,994.50 = 16,887 : x
  2. Step 2: Convert to fraction form
    60,663/90,994.50 = 16,887/x
  3. Step 3: Cross multiply
    60,663x = 90,994.50 × 16,887
  4. Step 4: Simplify right side
    60,663x = 1,536,624,121.50
  5. Step 5: Solve for x
    x = 1,536,624,121.50/60,663
  6. Step 6: Final answer
    x = 25,330.50

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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.