Home / 103,620.41-155,430.60-28,740.54

Finding the Fourth Proportional to 103,620.41, 155,430.60 and 28,740.54

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Solution

The fourth proportional to 103,620.41, 155,430.60 and 28,740.54 is: 43,110.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,620.41 : 155,430.60 = 28,740.54 : x
  2. Step 2: Convert to fraction form
    103,620.41/155,430.60 = 28,740.54/x
  3. Step 3: Cross multiply
    103,620.41x = 155,430.60 × 28,740.54
  4. Step 4: Simplify right side
    103,620.41x = 4,467,159,376.52
  5. Step 5: Solve for x
    x = 4,467,159,376.52/103,620.41
  6. Step 6: Final answer
    x = 43,110.81

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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.