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Finding the Fourth Proportional to 71,612.64, 107,425.44 and 21,692.88

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Solution

The fourth proportional to 71,612.64, 107,425.44 and 21,692.88 is: 32,541.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,612.64 : 107,425.44 = 21,692.88 : x
  2. Step 2: Convert to fraction form
    71,612.64/107,425.44 = 21,692.88/x
  3. Step 3: Cross multiply
    71,612.64x = 107,425.44 × 21,692.88
  4. Step 4: Simplify right side
    71,612.64x = 2,330,367,178.87
  5. Step 5: Solve for x
    x = 2,330,367,178.87/71,612.64
  6. Step 6: Final answer
    x = 32,541.28

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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.