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Finding the Fourth Proportional to 54,328.32, 74,974.56 and 30,454.56

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Solution

The fourth proportional to 54,328.32, 74,974.56 and 30,454.56 is: 42,028.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,328.32 : 74,974.56 = 30,454.56 : x
  2. Step 2: Convert to fraction form
    54,328.32/74,974.56 = 30,454.56/x
  3. Step 3: Cross multiply
    54,328.32x = 74,974.56 × 30,454.56
  4. Step 4: Simplify right side
    54,328.32x = 2,283,317,235.99
  5. Step 5: Solve for x
    x = 2,283,317,235.99/54,328.32
  6. Step 6: Final answer
    x = 42,028.12

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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.