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Finding the Fourth Proportional to 43,915, 65,872.50 and 12,750.52

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Solution

The fourth proportional to 43,915, 65,872.50 and 12,750.52 is: 19,125.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,915 : 65,872.50 = 12,750.52 : x
  2. Step 2: Convert to fraction form
    43,915/65,872.50 = 12,750.52/x
  3. Step 3: Cross multiply
    43,915x = 65,872.50 × 12,750.52
  4. Step 4: Simplify right side
    43,915x = 839,908,628.70
  5. Step 5: Solve for x
    x = 839,908,628.70/43,915
  6. Step 6: Final answer
    x = 19,125.78

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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.