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Finding the Fourth Proportional to 92,950.38, 128,310.81 and 62,776.61

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Solution

The fourth proportional to 92,950.38, 128,310.81 and 62,776.61 is: 86,658.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,950.38 : 128,310.81 = 62,776.61 : x
  2. Step 2: Convert to fraction form
    92,950.38/128,310.81 = 62,776.61/x
  3. Step 3: Cross multiply
    92,950.38x = 128,310.81 × 62,776.61
  4. Step 4: Simplify right side
    92,950.38x = 8,054,917,998.93
  5. Step 5: Solve for x
    x = 8,054,917,998.93/92,950.38
  6. Step 6: Final answer
    x = 86,658.26

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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.