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Finding the Fourth Proportional to 69,403.42, 95,770.95 and 40,720.09

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Solution

The fourth proportional to 69,403.42, 95,770.95 and 40,720.09 is: 56,190.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,403.42 : 95,770.95 = 40,720.09 : x
  2. Step 2: Convert to fraction form
    69,403.42/95,770.95 = 40,720.09/x
  3. Step 3: Cross multiply
    69,403.42x = 95,770.95 × 40,720.09
  4. Step 4: Simplify right side
    69,403.42x = 3,899,801,703.39
  5. Step 5: Solve for x
    x = 3,899,801,703.39/69,403.42
  6. Step 6: Final answer
    x = 56,190.34

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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.