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Finding the Fourth Proportional to 81,800.94, 112,839.20 and 49,086.89

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Solution

The fourth proportional to 81,800.94, 112,839.20 and 49,086.89 is: 67,712.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,800.94 : 112,839.20 = 49,086.89 : x
  2. Step 2: Convert to fraction form
    81,800.94/112,839.20 = 49,086.89/x
  3. Step 3: Cross multiply
    81,800.94x = 112,839.20 × 49,086.89
  4. Step 4: Simplify right side
    81,800.94x = 5,538,925,152.65
  5. Step 5: Solve for x
    x = 5,538,925,152.65/81,800.94
  6. Step 6: Final answer
    x = 67,712.24

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1.5x scale

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.