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Finding the Fourth Proportional to 66,799.86, 100,211.34 and 22,430.90

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Solution

The fourth proportional to 66,799.86, 100,211.34 and 22,430.90 is: 33,650.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,799.86 : 100,211.34 = 22,430.90 : x
  2. Step 2: Convert to fraction form
    66,799.86/100,211.34 = 22,430.90/x
  3. Step 3: Cross multiply
    66,799.86x = 100,211.34 × 22,430.90
  4. Step 4: Simplify right side
    66,799.86x = 2,247,830,546.41
  5. Step 5: Solve for x
    x = 2,247,830,546.41/66,799.86
  6. Step 6: Final answer
    x = 33,650.23

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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.