Home / 54,653.72-75,420.84-30,780.48

Finding the Fourth Proportional to 54,653.72, 75,420.84 and 30,780.48

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Solution

The fourth proportional to 54,653.72, 75,420.84 and 30,780.48 is: 42,476.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,653.72 : 75,420.84 = 30,780.48 : x
  2. Step 2: Convert to fraction form
    54,653.72/75,420.84 = 30,780.48/x
  3. Step 3: Cross multiply
    54,653.72x = 75,420.84 × 30,780.48
  4. Step 4: Simplify right side
    54,653.72x = 2,321,489,657.20
  5. Step 5: Solve for x
    x = 2,321,489,657.20/54,653.72
  6. Step 6: Final answer
    x = 42,476.33

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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.