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Finding the Fourth Proportional to 69,708.36, 104,503.77 and 30,235.77

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Solution

The fourth proportional to 69,708.36, 104,503.77 and 30,235.77 is: 45,328.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,708.36 : 104,503.77 = 30,235.77 : x
  2. Step 2: Convert to fraction form
    69,708.36/104,503.77 = 30,235.77/x
  3. Step 3: Cross multiply
    69,708.36x = 104,503.77 × 30,235.77
  4. Step 4: Simplify right side
    69,708.36x = 3,159,751,953.85
  5. Step 5: Solve for x
    x = 3,159,751,953.85/69,708.36
  6. Step 6: Final answer
    x = 45,328.16

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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.