Home / 45,878.81-68,836.59-20,930.61

Finding the Fourth Proportional to 45,878.81, 68,836.59 and 20,930.61

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Solution

The fourth proportional to 45,878.81, 68,836.59 and 20,930.61 is: 31,404.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,878.81 : 68,836.59 = 20,930.61 : x
  2. Step 2: Convert to fraction form
    45,878.81/68,836.59 = 20,930.61/x
  3. Step 3: Cross multiply
    45,878.81x = 68,836.59 × 20,930.61
  4. Step 4: Simplify right side
    45,878.81x = 1,440,791,819.02
  5. Step 5: Solve for x
    x = 1,440,791,819.02/45,878.81
  6. Step 6: Final answer
    x = 31,404.30

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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.