Home / 49,736.80-74,547.60-20,135.20

Finding the Fourth Proportional to 49,736.80, 74,547.60 and 20,135.20

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Solution

The fourth proportional to 49,736.80, 74,547.60 and 20,135.20 is: 30,179.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,736.80 : 74,547.60 = 20,135.20 : x
  2. Step 2: Convert to fraction form
    49,736.80/74,547.60 = 20,135.20/x
  3. Step 3: Cross multiply
    49,736.80x = 74,547.60 × 20,135.20
  4. Step 4: Simplify right side
    49,736.80x = 1,501,030,835.52
  5. Step 5: Solve for x
    x = 1,501,030,835.52/49,736.80
  6. Step 6: Final answer
    x = 30,179.48

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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.