Home / 76,013.78-104,899.68-42,021.73

Finding the Fourth Proportional to 76,013.78, 104,899.68 and 42,021.73

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Solution

The fourth proportional to 76,013.78, 104,899.68 and 42,021.73 is: 57,990.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,013.78 : 104,899.68 = 42,021.73 : x
  2. Step 2: Convert to fraction form
    76,013.78/104,899.68 = 42,021.73/x
  3. Step 3: Cross multiply
    76,013.78x = 104,899.68 × 42,021.73
  4. Step 4: Simplify right side
    76,013.78x = 4,408,066,030.05
  5. Step 5: Solve for x
    x = 4,408,066,030.05/76,013.78
  6. Step 6: Final answer
    x = 57,990.35

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1.5x scale

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.