Home / 76,012.78-104,898.30-42,020.73

Finding the Fourth Proportional to 76,012.78, 104,898.30 and 42,020.73

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Solution

The fourth proportional to 76,012.78, 104,898.30 and 42,020.73 is: 57,988.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,012.78 : 104,898.30 = 42,020.73 : x
  2. Step 2: Convert to fraction form
    76,012.78/104,898.30 = 42,020.73/x
  3. Step 3: Cross multiply
    76,012.78x = 104,898.30 × 42,020.73
  4. Step 4: Simplify right side
    76,012.78x = 4,407,903,141.76
  5. Step 5: Solve for x
    x = 4,407,903,141.76/76,012.78
  6. Step 6: Final answer
    x = 57,988.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.