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Finding the Fourth Proportional to 69,421.86, 95,801.94 and 39,213.45

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Solution

The fourth proportional to 69,421.86, 95,801.94 and 39,213.45 is: 54,114.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,421.86 : 95,801.94 = 39,213.45 : x
  2. Step 2: Convert to fraction form
    69,421.86/95,801.94 = 39,213.45/x
  3. Step 3: Cross multiply
    69,421.86x = 95,801.94 × 39,213.45
  4. Step 4: Simplify right side
    69,421.86x = 3,756,724,584.09
  5. Step 5: Solve for x
    x = 3,756,724,584.09/69,421.86
  6. Step 6: Final answer
    x = 54,114.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.