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Finding the Fourth Proportional to 70,692.76, 105,808.36 and 51,967.84

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Solution

The fourth proportional to 70,692.76, 105,808.36 and 51,967.84 is: 77,782.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,692.76 : 105,808.36 = 51,967.84 : x
  2. Step 2: Convert to fraction form
    70,692.76/105,808.36 = 51,967.84/x
  3. Step 3: Cross multiply
    70,692.76x = 105,808.36 × 51,967.84
  4. Step 4: Simplify right side
    70,692.76x = 5,498,631,923.14
  5. Step 5: Solve for x
    x = 5,498,631,923.14/70,692.76
  6. Step 6: Final answer
    x = 77,782.11

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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.