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Finding the Fourth Proportional to 60,698, 91,063.20 and 19,145

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Solution

The fourth proportional to 60,698, 91,063.20 and 19,145 is: 28,722.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,698 : 91,063.20 = 19,145 : x
  2. Step 2: Convert to fraction form
    60,698/91,063.20 = 19,145/x
  3. Step 3: Cross multiply
    60,698x = 91,063.20 × 19,145
  4. Step 4: Simplify right side
    60,698x = 1,743,404,964
  5. Step 5: Solve for x
    x = 1,743,404,964/60,698
  6. Step 6: Final answer
    x = 28,722.61

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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.