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Finding the Fourth Proportional to 70,018.83, 104,993.69 and 30,558.87

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Solution

The fourth proportional to 70,018.83, 104,993.69 and 30,558.87 is: 45,823.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,018.83 : 104,993.69 = 30,558.87 : x
  2. Step 2: Convert to fraction form
    70,018.83/104,993.69 = 30,558.87/x
  3. Step 3: Cross multiply
    70,018.83x = 104,993.69 × 30,558.87
  4. Step 4: Simplify right side
    70,018.83x = 3,208,488,370.74
  5. Step 5: Solve for x
    x = 3,208,488,370.74/70,018.83
  6. Step 6: Final answer
    x = 45,823.22

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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.