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Finding the Fourth Proportional to 92,311.80, 127,390.40 and 49,870.33

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Solution

The fourth proportional to 92,311.80, 127,390.40 and 49,870.33 is: 68,821.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,311.80 : 127,390.40 = 49,870.33 : x
  2. Step 2: Convert to fraction form
    92,311.80/127,390.40 = 49,870.33/x
  3. Step 3: Cross multiply
    92,311.80x = 127,390.40 × 49,870.33
  4. Step 4: Simplify right side
    92,311.80x = 6,353,001,286.83
  5. Step 5: Solve for x
    x = 6,353,001,286.83/92,311.80
  6. Step 6: Final answer
    x = 68,821.12

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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.