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Finding the Fourth Proportional to 66,834.78, 100,228.95 and 19,437.03

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Solution

The fourth proportional to 66,834.78, 100,228.95 and 19,437.03 is: 29,148.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,834.78 : 100,228.95 = 19,437.03 : x
  2. Step 2: Convert to fraction form
    66,834.78/100,228.95 = 19,437.03/x
  3. Step 3: Cross multiply
    66,834.78x = 100,228.95 × 19,437.03
  4. Step 4: Simplify right side
    66,834.78x = 1,948,153,108.02
  5. Step 5: Solve for x
    x = 1,948,153,108.02/66,834.78
  6. Step 6: Final answer
    x = 29,148.79

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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.