Home / 54,278.80-74,904.88-30,405.60

Finding the Fourth Proportional to 54,278.80, 74,904.88 and 30,405.60

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Solution

The fourth proportional to 54,278.80, 74,904.88 and 30,405.60 is: 41,959.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,278.80 : 74,904.88 = 30,405.60 : x
  2. Step 2: Convert to fraction form
    54,278.80/74,904.88 = 30,405.60/x
  3. Step 3: Cross multiply
    54,278.80x = 74,904.88 × 30,405.60
  4. Step 4: Simplify right side
    54,278.80x = 2,277,527,819.33
  5. Step 5: Solve for x
    x = 2,277,527,819.33/54,278.80
  6. Step 6: Final answer
    x = 41,959.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.