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Finding the Fourth Proportional to 70,671.40, 106,007.10 and 69,634.60

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Solution

The fourth proportional to 70,671.40, 106,007.10 and 69,634.60 is: 104,451.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,671.40 : 106,007.10 = 69,634.60 : x
  2. Step 2: Convert to fraction form
    70,671.40/106,007.10 = 69,634.60/x
  3. Step 3: Cross multiply
    70,671.40x = 106,007.10 × 69,634.60
  4. Step 4: Simplify right side
    70,671.40x = 7,381,762,005.66
  5. Step 5: Solve for x
    x = 7,381,762,005.66/70,671.40
  6. Step 6: Final answer
    x = 104,451.90

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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.