Home / 70,051.60-104,986.20-28,450

Finding the Fourth Proportional to 70,051.60, 104,986.20 and 28,450

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Solution

The fourth proportional to 70,051.60, 104,986.20 and 28,450 is: 42,637.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,051.60 : 104,986.20 = 28,450 : x
  2. Step 2: Convert to fraction form
    70,051.60/104,986.20 = 28,450/x
  3. Step 3: Cross multiply
    70,051.60x = 104,986.20 × 28,450
  4. Step 4: Simplify right side
    70,051.60x = 2,986,857,390
  5. Step 5: Solve for x
    x = 2,986,857,390/70,051.60
  6. Step 6: Final answer
    x = 42,637.96

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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.