Home / 54,921.58-75,778.20-31,047.74

Finding the Fourth Proportional to 54,921.58, 75,778.20 and 31,047.74

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Solution

The fourth proportional to 54,921.58, 75,778.20 and 31,047.74 is: 42,838.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,921.58 : 75,778.20 = 31,047.74 : x
  2. Step 2: Convert to fraction form
    54,921.58/75,778.20 = 31,047.74/x
  3. Step 3: Cross multiply
    54,921.58x = 75,778.20 × 31,047.74
  4. Step 4: Simplify right side
    54,921.58x = 2,352,741,851.27
  5. Step 5: Solve for x
    x = 2,352,741,851.27/54,921.58
  6. Step 6: Final answer
    x = 42,838.20

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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.