Home / 103,631.70-155,450.86-28,752.60

Finding the Fourth Proportional to 103,631.70, 155,450.86 and 28,752.60

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Solution

The fourth proportional to 103,631.70, 155,450.86 and 28,752.60 is: 43,129.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,631.70 : 155,450.86 = 28,752.60 : x
  2. Step 2: Convert to fraction form
    103,631.70/155,450.86 = 28,752.60/x
  3. Step 3: Cross multiply
    103,631.70x = 155,450.86 × 28,752.60
  4. Step 4: Simplify right side
    103,631.70x = 4,469,616,397.24
  5. Step 5: Solve for x
    x = 4,469,616,397.24/103,631.70
  6. Step 6: Final answer
    x = 43,129.82

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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.