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Finding the Fourth Proportional to 72,041.85, 108,054.27 and 19,455.44

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Solution

The fourth proportional to 72,041.85, 108,054.27 and 19,455.44 is: 29,180.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,041.85 : 108,054.27 = 19,455.44 : x
  2. Step 2: Convert to fraction form
    72,041.85/108,054.27 = 19,455.44/x
  3. Step 3: Cross multiply
    72,041.85x = 108,054.27 × 19,455.44
  4. Step 4: Simplify right side
    72,041.85x = 2,102,243,366.73
  5. Step 5: Solve for x
    x = 2,102,243,366.73/72,041.85
  6. Step 6: Final answer
    x = 29,180.86

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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.