Home / 81,164.50-121,639.83-34,359.46

Finding the Fourth Proportional to 81,164.50, 121,639.83 and 34,359.46

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Solution

The fourth proportional to 81,164.50, 121,639.83 and 34,359.46 is: 51,493.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,164.50 : 121,639.83 = 34,359.46 : x
  2. Step 2: Convert to fraction form
    81,164.50/121,639.83 = 34,359.46/x
  3. Step 3: Cross multiply
    81,164.50x = 121,639.83 × 34,359.46
  4. Step 4: Simplify right side
    81,164.50x = 4,179,478,873.29
  5. Step 5: Solve for x
    x = 4,179,478,873.29/81,164.50
  6. Step 6: Final answer
    x = 51,493.93

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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.