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Finding the Fourth Proportional to 71,737.60, 107,606.40 and 21,817.30

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Solution

The fourth proportional to 71,737.60, 107,606.40 and 21,817.30 is: 32,725.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,737.60 : 107,606.40 = 21,817.30 : x
  2. Step 2: Convert to fraction form
    71,737.60/107,606.40 = 21,817.30/x
  3. Step 3: Cross multiply
    71,737.60x = 107,606.40 × 21,817.30
  4. Step 4: Simplify right side
    71,737.60x = 2,347,681,110.72
  5. Step 5: Solve for x
    x = 2,347,681,110.72/71,737.60
  6. Step 6: Final answer
    x = 32,725.95

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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.