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Finding the Fourth Proportional to 92,930, 128,244 and 50,488.52

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Solution

The fourth proportional to 92,930, 128,244 and 50,488.52 is: 69,674.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,930 : 128,244 = 50,488.52 : x
  2. Step 2: Convert to fraction form
    92,930/128,244 = 50,488.52/x
  3. Step 3: Cross multiply
    92,930x = 128,244 × 50,488.52
  4. Step 4: Simplify right side
    92,930x = 6,474,849,758.88
  5. Step 5: Solve for x
    x = 6,474,849,758.88/92,930
  6. Step 6: Final answer
    x = 69,674.48

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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.