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Finding the Fourth Proportional to 66,907.20, 100,360.80 and 44,648.40

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Solution

The fourth proportional to 66,907.20, 100,360.80 and 44,648.40 is: 66,972.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,907.20 : 100,360.80 = 44,648.40 : x
  2. Step 2: Convert to fraction form
    66,907.20/100,360.80 = 44,648.40/x
  3. Step 3: Cross multiply
    66,907.20x = 100,360.80 × 44,648.40
  4. Step 4: Simplify right side
    66,907.20x = 4,480,949,142.72
  5. Step 5: Solve for x
    x = 4,480,949,142.72/66,907.20
  6. Step 6: Final answer
    x = 66,972.60

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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.