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Finding the Fourth Proportional to 76,794.81, 105,963.97 and 42,795.84

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Solution

The fourth proportional to 76,794.81, 105,963.97 and 42,795.84 is: 59,051.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,794.81 : 105,963.97 = 42,795.84 : x
  2. Step 2: Convert to fraction form
    76,794.81/105,963.97 = 42,795.84/x
  3. Step 3: Cross multiply
    76,794.81x = 105,963.97 × 42,795.84
  4. Step 4: Simplify right side
    76,794.81x = 4,534,817,105.88
  5. Step 5: Solve for x
    x = 4,534,817,105.88/76,794.81
  6. Step 6: Final answer
    x = 59,051.09

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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.