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Finding the Fourth Proportional to 70,050.60, 104,984.70 and 28,449

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Solution

The fourth proportional to 70,050.60, 104,984.70 and 28,449 is: 42,636.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,050.60 : 104,984.70 = 28,449 : x
  2. Step 2: Convert to fraction form
    70,050.60/104,984.70 = 28,449/x
  3. Step 3: Cross multiply
    70,050.60x = 104,984.70 × 28,449
  4. Step 4: Simplify right side
    70,050.60x = 2,986,709,730.30
  5. Step 5: Solve for x
    x = 2,986,709,730.30/70,050.60
  6. Step 6: Final answer
    x = 42,636.46

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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.