Home / 54,657.72-75,427.20-30,788.64

Finding the Fourth Proportional to 54,657.72, 75,427.20 and 30,788.64

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Solution

The fourth proportional to 54,657.72, 75,427.20 and 30,788.64 is: 42,488.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,657.72 : 75,427.20 = 30,788.64 : x
  2. Step 2: Convert to fraction form
    54,657.72/75,427.20 = 30,788.64/x
  3. Step 3: Cross multiply
    54,657.72x = 75,427.20 × 30,788.64
  4. Step 4: Simplify right side
    54,657.72x = 2,322,300,907.01
  5. Step 5: Solve for x
    x = 2,322,300,907.01/54,657.72
  6. Step 6: Final answer
    x = 42,488.07

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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.