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Finding the Fourth Proportional to 98,992.52, 136,610.61 and 53,670.38

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Solution

The fourth proportional to 98,992.52, 136,610.61 and 53,670.38 is: 74,065.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,992.52 : 136,610.61 = 53,670.38 : x
  2. Step 2: Convert to fraction form
    98,992.52/136,610.61 = 53,670.38/x
  3. Step 3: Cross multiply
    98,992.52x = 136,610.61 × 53,670.38
  4. Step 4: Simplify right side
    98,992.52x = 7,331,943,350.73
  5. Step 5: Solve for x
    x = 7,331,943,350.73/98,992.52
  6. Step 6: Final answer
    x = 74,065.63

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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.