Home / 74,187.20-111,129.60-46,020.80

Finding the Fourth Proportional to 74,187.20, 111,129.60 and 46,020.80

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Solution

The fourth proportional to 74,187.20, 111,129.60 and 46,020.80 is: 68,937.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,187.20 : 111,129.60 = 46,020.80 : x
  2. Step 2: Convert to fraction form
    74,187.20/111,129.60 = 46,020.80/x
  3. Step 3: Cross multiply
    74,187.20x = 111,129.60 × 46,020.80
  4. Step 4: Simplify right side
    74,187.20x = 5,114,273,095.68
  5. Step 5: Solve for x
    x = 5,114,273,095.68/74,187.20
  6. Step 6: Final answer
    x = 68,937.41

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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.