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Finding the Fourth Proportional to 66,850.40, 100,078.64 and 49,398.24

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Solution

The fourth proportional to 66,850.40, 100,078.64 and 49,398.24 is: 73,951.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,850.40 : 100,078.64 = 49,398.24 : x
  2. Step 2: Convert to fraction form
    66,850.40/100,078.64 = 49,398.24/x
  3. Step 3: Cross multiply
    66,850.40x = 100,078.64 × 49,398.24
  4. Step 4: Simplify right side
    66,850.40x = 4,943,708,677.59
  5. Step 5: Solve for x
    x = 4,943,708,677.59/66,850.40
  6. Step 6: Final answer
    x = 73,951.82

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1.5x scale

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.