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Finding the Fourth Proportional to 70,993.88, 106,385.64 and 28,822.68

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Solution

The fourth proportional to 70,993.88, 106,385.64 and 28,822.68 is: 43,191.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,993.88 : 106,385.64 = 28,822.68 : x
  2. Step 2: Convert to fraction form
    70,993.88/106,385.64 = 28,822.68/x
  3. Step 3: Cross multiply
    70,993.88x = 106,385.64 × 28,822.68
  4. Step 4: Simplify right side
    70,993.88x = 3,066,319,258.32
  5. Step 5: Solve for x
    x = 3,066,319,258.32/70,993.88
  6. Step 6: Final answer
    x = 43,191.32

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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.