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Finding the Fourth Proportional to 98,898.89, 136,480.81 and 53,576.75

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Solution

The fourth proportional to 98,898.89, 136,480.81 and 53,576.75 is: 73,936.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,898.89 : 136,480.81 = 53,576.75 : x
  2. Step 2: Convert to fraction form
    98,898.89/136,480.81 = 53,576.75/x
  3. Step 3: Cross multiply
    98,898.89x = 136,480.81 × 53,576.75
  4. Step 4: Simplify right side
    98,898.89x = 7,312,198,237.17
  5. Step 5: Solve for x
    x = 7,312,198,237.17/98,898.89
  6. Step 6: Final answer
    x = 73,936.10

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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.