Home / 76,579.71-114,856.61-21,162.75

Finding the Fourth Proportional to 76,579.71, 114,856.61 and 21,162.75

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Solution

The fourth proportional to 76,579.71, 114,856.61 and 21,162.75 is: 31,740.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,579.71 : 114,856.61 = 21,162.75 : x
  2. Step 2: Convert to fraction form
    76,579.71/114,856.61 = 21,162.75/x
  3. Step 3: Cross multiply
    76,579.71x = 114,856.61 × 21,162.75
  4. Step 4: Simplify right side
    76,579.71x = 2,430,681,617.46
  5. Step 5: Solve for x
    x = 2,430,681,617.46/76,579.71
  6. Step 6: Final answer
    x = 31,740.54

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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.