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Finding the Fourth Proportional to 69,401.60, 104,025.60 and 38,259.20

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Solution

The fourth proportional to 69,401.60, 104,025.60 and 38,259.20 is: 57,346.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,401.60 : 104,025.60 = 38,259.20 : x
  2. Step 2: Convert to fraction form
    69,401.60/104,025.60 = 38,259.20/x
  3. Step 3: Cross multiply
    69,401.60x = 104,025.60 × 38,259.20
  4. Step 4: Simplify right side
    69,401.60x = 3,979,936,235.52
  5. Step 5: Solve for x
    x = 3,979,936,235.52/69,401.60
  6. Step 6: Final answer
    x = 57,346.46

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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.