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Finding the Fourth Proportional to 72,059.70, 108,089.58 and 19,470.54

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Solution

The fourth proportional to 72,059.70, 108,089.58 and 19,470.54 is: 29,205.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,059.70 : 108,089.58 = 19,470.54 : x
  2. Step 2: Convert to fraction form
    72,059.70/108,089.58 = 19,470.54/x
  3. Step 3: Cross multiply
    72,059.70x = 108,089.58 × 19,470.54
  4. Step 4: Simplify right side
    72,059.70x = 2,104,562,490.97
  5. Step 5: Solve for x
    x = 2,104,562,490.97/72,059.70
  6. Step 6: Final answer
    x = 29,205.82

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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.