Home / 81,098.40-121,653.75-21,933.20

Finding the Fourth Proportional to 81,098.40, 121,653.75 and 21,933.20

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Solution

The fourth proportional to 81,098.40, 121,653.75 and 21,933.20 is: 32,901.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,098.40 : 121,653.75 = 21,933.20 : x
  2. Step 2: Convert to fraction form
    81,098.40/121,653.75 = 21,933.20/x
  3. Step 3: Cross multiply
    81,098.40x = 121,653.75 × 21,933.20
  4. Step 4: Simplify right side
    81,098.40x = 2,668,256,029.50
  5. Step 5: Solve for x
    x = 2,668,256,029.50/81,098.40
  6. Step 6: Final answer
    x = 32,901.46

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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.