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Finding the Fourth Proportional to 98,376.72, 135,760.08 and 53,664.72

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Solution

The fourth proportional to 98,376.72, 135,760.08 and 53,664.72 is: 74,057.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,376.72 : 135,760.08 = 53,664.72 : x
  2. Step 2: Convert to fraction form
    98,376.72/135,760.08 = 53,664.72/x
  3. Step 3: Cross multiply
    98,376.72x = 135,760.08 × 53,664.72
  4. Step 4: Simplify right side
    98,376.72x = 7,285,526,680.38
  5. Step 5: Solve for x
    x = 7,285,526,680.38/98,376.72
  6. Step 6: Final answer
    x = 74,057.43

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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.