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Finding the Fourth Proportional to 76,963.74, 106,151.50 and 66,226.60

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Solution

The fourth proportional to 76,963.74, 106,151.50 and 66,226.60 is: 91,342.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,963.74 : 106,151.50 = 66,226.60 : x
  2. Step 2: Convert to fraction form
    76,963.74/106,151.50 = 66,226.60/x
  3. Step 3: Cross multiply
    76,963.74x = 106,151.50 × 66,226.60
  4. Step 4: Simplify right side
    76,963.74x = 7,030,052,498.95
  5. Step 5: Solve for x
    x = 7,030,052,498.95/76,963.74
  6. Step 6: Final answer
    x = 91,342.39

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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.