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Finding the Fourth Proportional to 72,267.66, 108,261.23 and 53,257.77

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Solution

The fourth proportional to 72,267.66, 108,261.23 and 53,257.77 is: 79,783.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,267.66 : 108,261.23 = 53,257.77 : x
  2. Step 2: Convert to fraction form
    72,267.66/108,261.23 = 53,257.77/x
  3. Step 3: Cross multiply
    72,267.66x = 108,261.23 × 53,257.77
  4. Step 4: Simplify right side
    72,267.66x = 5,765,751,420.97
  5. Step 5: Solve for x
    x = 5,765,751,420.97/72,267.66
  6. Step 6: Final answer
    x = 79,783.29

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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.