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Finding the Fourth Proportional to 71,656.60, 107,485.16 and 21,737.14

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Solution

The fourth proportional to 71,656.60, 107,485.16 and 21,737.14 is: 32,605.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,656.60 : 107,485.16 = 21,737.14 : x
  2. Step 2: Convert to fraction form
    71,656.60/107,485.16 = 21,737.14/x
  3. Step 3: Cross multiply
    71,656.60x = 107,485.16 × 21,737.14
  4. Step 4: Simplify right side
    71,656.60x = 2,336,419,970.84
  5. Step 5: Solve for x
    x = 2,336,419,970.84/71,656.60
  6. Step 6: Final answer
    x = 32,605.79

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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.