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Finding the Fourth Proportional to 66,907.14, 100,360.76 and 16,990.98

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Solution

The fourth proportional to 66,907.14, 100,360.76 and 16,990.98 is: 25,486.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,907.14 : 100,360.76 = 16,990.98 : x
  2. Step 2: Convert to fraction form
    66,907.14/100,360.76 = 16,990.98/x
  3. Step 3: Cross multiply
    66,907.14x = 100,360.76 × 16,990.98
  4. Step 4: Simplify right side
    66,907.14x = 1,705,227,580.99
  5. Step 5: Solve for x
    x = 1,705,227,580.99/66,907.14
  6. Step 6: Final answer
    x = 25,486.48

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1.5x scale

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.