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Finding the Fourth Proportional to 69,124.76, 103,689.03 and 19,205

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Solution

The fourth proportional to 69,124.76, 103,689.03 and 19,205 is: 28,808.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,124.76 : 103,689.03 = 19,205 : x
  2. Step 2: Convert to fraction form
    69,124.76/103,689.03 = 19,205/x
  3. Step 3: Cross multiply
    69,124.76x = 103,689.03 × 19,205
  4. Step 4: Simplify right side
    69,124.76x = 1,991,347,821.15
  5. Step 5: Solve for x
    x = 1,991,347,821.15/69,124.76
  6. Step 6: Final answer
    x = 28,808.03

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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.