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Finding the Fourth Proportional to 69,218.40, 103,827.60 and 67,906.20

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Solution

The fourth proportional to 69,218.40, 103,827.60 and 67,906.20 is: 101,859.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,218.40 : 103,827.60 = 67,906.20 : x
  2. Step 2: Convert to fraction form
    69,218.40/103,827.60 = 67,906.20/x
  3. Step 3: Cross multiply
    69,218.40x = 103,827.60 × 67,906.20
  4. Step 4: Simplify right side
    69,218.40x = 7,050,537,771.12
  5. Step 5: Solve for x
    x = 7,050,537,771.12/69,218.40
  6. Step 6: Final answer
    x = 101,859.30

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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.