Home / 71,078.32-106,654.38-28,989.28

Finding the Fourth Proportional to 71,078.32, 106,654.38 and 28,989.28

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Solution

The fourth proportional to 71,078.32, 106,654.38 and 28,989.28 is: 43,498.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,078.32 : 106,654.38 = 28,989.28 : x
  2. Step 2: Convert to fraction form
    71,078.32/106,654.38 = 28,989.28/x
  3. Step 3: Cross multiply
    71,078.32x = 106,654.38 × 28,989.28
  4. Step 4: Simplify right side
    71,078.32x = 3,091,833,685.05
  5. Step 5: Solve for x
    x = 3,091,833,685.05/71,078.32
  6. Step 6: Final answer
    x = 43,498.97

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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.