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Finding the Fourth Proportional to 85,392.96, 117,852.48 and 49,107.84

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Solution

The fourth proportional to 85,392.96, 117,852.48 and 49,107.84 is: 67,774.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,392.96 : 117,852.48 = 49,107.84 : x
  2. Step 2: Convert to fraction form
    85,392.96/117,852.48 = 49,107.84/x
  3. Step 3: Cross multiply
    85,392.96x = 117,852.48 × 49,107.84
  4. Step 4: Simplify right side
    85,392.96x = 5,787,480,731.44
  5. Step 5: Solve for x
    x = 5,787,480,731.44/85,392.96
  6. Step 6: Final answer
    x = 67,774.68

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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.