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Finding the Fourth Proportional to 70,005.50, 96,604.08 and 39,786.84

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Solution

The fourth proportional to 70,005.50, 96,604.08 and 39,786.84 is: 54,903.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,005.50 : 96,604.08 = 39,786.84 : x
  2. Step 2: Convert to fraction form
    70,005.50/96,604.08 = 39,786.84/x
  3. Step 3: Cross multiply
    70,005.50x = 96,604.08 × 39,786.84
  4. Step 4: Simplify right side
    70,005.50x = 3,843,571,074.31
  5. Step 5: Solve for x
    x = 3,843,571,074.31/70,005.50
  6. Step 6: Final answer
    x = 54,903.84

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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.