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Finding the Fourth Proportional to 57,984, 79,418.34 and 54,579.56

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Solution

The fourth proportional to 57,984, 79,418.34 and 54,579.56 is: 74,755.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,984 : 79,418.34 = 54,579.56 : x
  2. Step 2: Convert to fraction form
    57,984/79,418.34 = 54,579.56/x
  3. Step 3: Cross multiply
    57,984x = 79,418.34 × 54,579.56
  4. Step 4: Simplify right side
    57,984x = 4,334,618,053.13
  5. Step 5: Solve for x
    x = 4,334,618,053.13/57,984
  6. Step 6: Final answer
    x = 74,755.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.