Home / 81,141.94-121,729.38-34,394.68

Finding the Fourth Proportional to 81,141.94, 121,729.38 and 34,394.68

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Solution

The fourth proportional to 81,141.94, 121,729.38 and 34,394.68 is: 51,599.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,141.94 : 121,729.38 = 34,394.68 : x
  2. Step 2: Convert to fraction form
    81,141.94/121,729.38 = 34,394.68/x
  3. Step 3: Cross multiply
    81,141.94x = 121,729.38 × 34,394.68
  4. Step 4: Simplify right side
    81,141.94x = 4,186,843,071.70
  5. Step 5: Solve for x
    x = 4,186,843,071.70/81,141.94
  6. Step 6: Final answer
    x = 51,599.00

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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.