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Finding the Fourth Proportional to 66,442.40, 99,469.20 and 44,280.80

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Solution

The fourth proportional to 66,442.40, 99,469.20 and 44,280.80 is: 66,291.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,442.40 : 99,469.20 = 44,280.80 : x
  2. Step 2: Convert to fraction form
    66,442.40/99,469.20 = 44,280.80/x
  3. Step 3: Cross multiply
    66,442.40x = 99,469.20 × 44,280.80
  4. Step 4: Simplify right side
    66,442.40x = 4,404,575,751.36
  5. Step 5: Solve for x
    x = 4,404,575,751.36/66,442.40
  6. Step 6: Final answer
    x = 66,291.64

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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.