Home / 84,685.14-126,982.34-28,506.60

Finding the Fourth Proportional to 84,685.14, 126,982.34 and 28,506.60

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Solution

The fourth proportional to 84,685.14, 126,982.34 and 28,506.60 is: 42,744.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,685.14 : 126,982.34 = 28,506.60 : x
  2. Step 2: Convert to fraction form
    84,685.14/126,982.34 = 28,506.60/x
  3. Step 3: Cross multiply
    84,685.14x = 126,982.34 × 28,506.60
  4. Step 4: Simplify right side
    84,685.14x = 3,619,834,773.44
  5. Step 5: Solve for x
    x = 3,619,834,773.44/84,685.14
  6. Step 6: Final answer
    x = 42,744.63

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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.