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Finding the Fourth Proportional to 91,279.27, 136,934.47 and 40,696.65

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Solution

The fourth proportional to 91,279.27, 136,934.47 and 40,696.65 is: 61,051.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,279.27 : 136,934.47 = 40,696.65 : x
  2. Step 2: Convert to fraction form
    91,279.27/136,934.47 = 40,696.65/x
  3. Step 3: Cross multiply
    91,279.27x = 136,934.47 × 40,696.65
  4. Step 4: Simplify right side
    91,279.27x = 5,572,773,310.37
  5. Step 5: Solve for x
    x = 5,572,773,310.37/91,279.27
  6. Step 6: Final answer
    x = 61,051.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.