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Finding the Fourth Proportional to 69,289.60, 103,934.40 and 52,905.60

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Solution

The fourth proportional to 69,289.60, 103,934.40 and 52,905.60 is: 79,358.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,289.60 : 103,934.40 = 52,905.60 : x
  2. Step 2: Convert to fraction form
    69,289.60/103,934.40 = 52,905.60/x
  3. Step 3: Cross multiply
    69,289.60x = 103,934.40 × 52,905.60
  4. Step 4: Simplify right side
    69,289.60x = 5,498,711,792.64
  5. Step 5: Solve for x
    x = 5,498,711,792.64/69,289.60
  6. Step 6: Final answer
    x = 79,358.40

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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.