Home / 54,321.52-74,885.20-38,139.56

Finding the Fourth Proportional to 54,321.52, 74,885.20 and 38,139.56

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Solution

The fourth proportional to 54,321.52, 74,885.20 and 38,139.56 is: 52,577.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,321.52 : 74,885.20 = 38,139.56 : x
  2. Step 2: Convert to fraction form
    54,321.52/74,885.20 = 38,139.56/x
  3. Step 3: Cross multiply
    54,321.52x = 74,885.20 × 38,139.56
  4. Step 4: Simplify right side
    54,321.52x = 2,856,088,578.51
  5. Step 5: Solve for x
    x = 2,856,088,578.51/54,321.52
  6. Step 6: Final answer
    x = 52,577.48

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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.