Home / 54,735.20-82,102.80-31,342.40

Finding the Fourth Proportional to 54,735.20, 82,102.80 and 31,342.40

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Solution

The fourth proportional to 54,735.20, 82,102.80 and 31,342.40 is: 47,013.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,735.20 : 82,102.80 = 31,342.40 : x
  2. Step 2: Convert to fraction form
    54,735.20/82,102.80 = 31,342.40/x
  3. Step 3: Cross multiply
    54,735.20x = 82,102.80 × 31,342.40
  4. Step 4: Simplify right side
    54,735.20x = 2,573,298,798.72
  5. Step 5: Solve for x
    x = 2,573,298,798.72/54,735.20
  6. Step 6: Final answer
    x = 47,013.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.