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Finding the Fourth Proportional to 30,359.86, 41,869.30 and 19,030.50

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Solution

The fourth proportional to 30,359.86, 41,869.30 and 19,030.50 is: 26,244.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,359.86 : 41,869.30 = 19,030.50 : x
  2. Step 2: Convert to fraction form
    30,359.86/41,869.30 = 19,030.50/x
  3. Step 3: Cross multiply
    30,359.86x = 41,869.30 × 19,030.50
  4. Step 4: Simplify right side
    30,359.86x = 796,793,713.65
  5. Step 5: Solve for x
    x = 796,793,713.65/30,359.86
  6. Step 6: Final answer
    x = 26,244.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.