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Finding the Fourth Proportional to 67,213.79, 100,820.67 and 20,466.66

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Solution

The fourth proportional to 67,213.79, 100,820.67 and 20,466.66 is: 30,699.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,213.79 : 100,820.67 = 20,466.66 : x
  2. Step 2: Convert to fraction form
    67,213.79/100,820.67 = 20,466.66/x
  3. Step 3: Cross multiply
    67,213.79x = 100,820.67 × 20,466.66
  4. Step 4: Simplify right side
    67,213.79x = 2,063,462,373.86
  5. Step 5: Solve for x
    x = 2,063,462,373.86/67,213.79
  6. Step 6: Final answer
    x = 30,699.99

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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.