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Finding the Fourth Proportional to 72,556.76, 108,835.68 and 19,969.14

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Solution

The fourth proportional to 72,556.76, 108,835.68 and 19,969.14 is: 29,953.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,556.76 : 108,835.68 = 19,969.14 : x
  2. Step 2: Convert to fraction form
    72,556.76/108,835.68 = 19,969.14/x
  3. Step 3: Cross multiply
    72,556.76x = 108,835.68 × 19,969.14
  4. Step 4: Simplify right side
    72,556.76x = 2,173,354,930.92
  5. Step 5: Solve for x
    x = 2,173,354,930.92/72,556.76
  6. Step 6: Final answer
    x = 29,953.86

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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.