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Finding the Fourth Proportional to 66,779.48, 100,174.68 and 22,406.60

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Solution

The fourth proportional to 66,779.48, 100,174.68 and 22,406.60 is: 33,611.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,779.48 : 100,174.68 = 22,406.60 : x
  2. Step 2: Convert to fraction form
    66,779.48/100,174.68 = 22,406.60/x
  3. Step 3: Cross multiply
    66,779.48x = 100,174.68 × 22,406.60
  4. Step 4: Simplify right side
    66,779.48x = 2,244,573,984.89
  5. Step 5: Solve for x
    x = 2,244,573,984.89/66,779.48
  6. Step 6: Final answer
    x = 33,611.73

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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.