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Finding the Fourth Proportional to 98,772, 136,306.32 and 54,060.96

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Solution

The fourth proportional to 98,772, 136,306.32 and 54,060.96 is: 74,604.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,772 : 136,306.32 = 54,060.96 : x
  2. Step 2: Convert to fraction form
    98,772/136,306.32 = 54,060.96/x
  3. Step 3: Cross multiply
    98,772x = 136,306.32 × 54,060.96
  4. Step 4: Simplify right side
    98,772x = 7,368,850,513.27
  5. Step 5: Solve for x
    x = 7,368,850,513.27/98,772
  6. Step 6: Final answer
    x = 74,604.65

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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.