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Finding the Fourth Proportional to 66,636.40, 99,650.96 and 49,780.96

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Solution

The fourth proportional to 66,636.40, 99,650.96 and 49,780.96 is: 74,444.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,636.40 : 99,650.96 = 49,780.96 : x
  2. Step 2: Convert to fraction form
    66,636.40/99,650.96 = 49,780.96/x
  3. Step 3: Cross multiply
    66,636.40x = 99,650.96 × 49,780.96
  4. Step 4: Simplify right side
    66,636.40x = 4,960,720,453.72
  5. Step 5: Solve for x
    x = 4,960,720,453.72/66,636.40
  6. Step 6: Final answer
    x = 74,444.60

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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.