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Finding the Fourth Proportional to 74,367.83, 111,432.82 and 66,814.48

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Solution

The fourth proportional to 74,367.83, 111,432.82 and 66,814.48 is: 100,114.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,367.83 : 111,432.82 = 66,814.48 : x
  2. Step 2: Convert to fraction form
    74,367.83/111,432.82 = 66,814.48/x
  3. Step 3: Cross multiply
    74,367.83x = 111,432.82 × 66,814.48
  4. Step 4: Simplify right side
    74,367.83x = 7,445,325,199.03
  5. Step 5: Solve for x
    x = 7,445,325,199.03/74,367.83
  6. Step 6: Final answer
    x = 100,114.86

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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.