Home / 81,087.92-121,631.59-21,923.58

Finding the Fourth Proportional to 81,087.92, 121,631.59 and 21,923.58

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Solution

The fourth proportional to 81,087.92, 121,631.59 and 21,923.58 is: 32,885.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,087.92 : 121,631.59 = 21,923.58 : x
  2. Step 2: Convert to fraction form
    81,087.92/121,631.59 = 21,923.58/x
  3. Step 3: Cross multiply
    81,087.92x = 121,631.59 × 21,923.58
  4. Step 4: Simplify right side
    81,087.92x = 2,666,599,693.24
  5. Step 5: Solve for x
    x = 2,666,599,693.24/81,087.92
  6. Step 6: Final answer
    x = 32,885.29

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1.5x scale

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.