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Finding the Fourth Proportional to 66,907.20, 100,328.40 and 37,293.60

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Solution

The fourth proportional to 66,907.20, 100,328.40 and 37,293.60 is: 55,922.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,907.20 : 100,328.40 = 37,293.60 : x
  2. Step 2: Convert to fraction form
    66,907.20/100,328.40 = 37,293.60/x
  3. Step 3: Cross multiply
    66,907.20x = 100,328.40 × 37,293.60
  4. Step 4: Simplify right side
    66,907.20x = 3,741,607,218.24
  5. Step 5: Solve for x
    x = 3,741,607,218.24/66,907.20
  6. Step 6: Final answer
    x = 55,922.34

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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.