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Finding the Fourth Proportional to 66,511.74, 91,762.15 and 51,202.97

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Solution

The fourth proportional to 66,511.74, 91,762.15 and 51,202.97 is: 70,641.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,511.74 : 91,762.15 = 51,202.97 : x
  2. Step 2: Convert to fraction form
    66,511.74/91,762.15 = 51,202.97/x
  3. Step 3: Cross multiply
    66,511.74x = 91,762.15 × 51,202.97
  4. Step 4: Simplify right side
    66,511.74x = 4,698,494,489.33
  5. Step 5: Solve for x
    x = 4,698,494,489.33/66,511.74
  6. Step 6: Final answer
    x = 70,641.58

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1.5x scale

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.