Home / 70,435.87-105,654.97-19,836.12

Finding the Fourth Proportional to 70,435.87, 105,654.97 and 19,836.12

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Solution

The fourth proportional to 70,435.87, 105,654.97 and 19,836.12 is: 29,754.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,435.87 : 105,654.97 = 19,836.12 : x
  2. Step 2: Convert to fraction form
    70,435.87/105,654.97 = 19,836.12/x
  3. Step 3: Cross multiply
    70,435.87x = 105,654.97 × 19,836.12
  4. Step 4: Simplify right side
    70,435.87x = 2,095,784,663.52
  5. Step 5: Solve for x
    x = 2,095,784,663.52/70,435.87
  6. Step 6: Final answer
    x = 29,754.51

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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.