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Finding the Fourth Proportional to 84,898.28, 127,172.40 and 49,731.32

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Solution

The fourth proportional to 84,898.28, 127,172.40 and 49,731.32 is: 74,494.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,898.28 : 127,172.40 = 49,731.32 : x
  2. Step 2: Convert to fraction form
    84,898.28/127,172.40 = 49,731.32/x
  3. Step 3: Cross multiply
    84,898.28x = 127,172.40 × 49,731.32
  4. Step 4: Simplify right side
    84,898.28x = 6,324,451,319.57
  5. Step 5: Solve for x
    x = 6,324,451,319.57/84,898.28
  6. Step 6: Final answer
    x = 74,494.46

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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.