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Finding the Fourth Proportional to 70,692.75, 106,039.13 and 21,444.75

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Solution

The fourth proportional to 70,692.75, 106,039.13 and 21,444.75 is: 32,167.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,692.75 : 106,039.13 = 21,444.75 : x
  2. Step 2: Convert to fraction form
    70,692.75/106,039.13 = 21,444.75/x
  3. Step 3: Cross multiply
    70,692.75x = 106,039.13 × 21,444.75
  4. Step 4: Simplify right side
    70,692.75x = 2,273,982,525.84
  5. Step 5: Solve for x
    x = 2,273,982,525.84/70,692.75
  6. Step 6: Final answer
    x = 32,167.13

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1.5x scale

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.