Home / 54,619-75,372.98-30,419.80

Finding the Fourth Proportional to 54,619, 75,372.98 and 30,419.80

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Solution

The fourth proportional to 54,619, 75,372.98 and 30,419.80 is: 41,978.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,619 : 75,372.98 = 30,419.80 : x
  2. Step 2: Convert to fraction form
    54,619/75,372.98 = 30,419.80/x
  3. Step 3: Cross multiply
    54,619x = 75,372.98 × 30,419.80
  4. Step 4: Simplify right side
    54,619x = 2,292,830,977.00
  5. Step 5: Solve for x
    x = 2,292,830,977.00/54,619
  6. Step 6: Final answer
    x = 41,978.63

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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.