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Finding the Fourth Proportional to 54,278.58, 74,904.03 and 30,405.45

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Solution

The fourth proportional to 54,278.58, 74,904.03 and 30,405.45 is: 41,959.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,278.58 : 74,904.03 = 30,405.45 : x
  2. Step 2: Convert to fraction form
    54,278.58/74,904.03 = 30,405.45/x
  3. Step 3: Cross multiply
    54,278.58x = 74,904.03 × 30,405.45
  4. Step 4: Simplify right side
    54,278.58x = 2,277,490,738.96
  5. Step 5: Solve for x
    x = 2,277,490,738.96/54,278.58
  6. Step 6: Final answer
    x = 41,959.29

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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.