Home / 81,216.91-121,836.80-25,061.58

Finding the Fourth Proportional to 81,216.91, 121,836.80 and 25,061.58

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Solution

The fourth proportional to 81,216.91, 121,836.80 and 25,061.58 is: 37,595.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,216.91 : 121,836.80 = 25,061.58 : x
  2. Step 2: Convert to fraction form
    81,216.91/121,836.80 = 25,061.58/x
  3. Step 3: Cross multiply
    81,216.91x = 121,836.80 × 25,061.58
  4. Step 4: Simplify right side
    81,216.91x = 3,053,421,975.65
  5. Step 5: Solve for x
    x = 3,053,421,975.65/81,216.91
  6. Step 6: Final answer
    x = 37,595.89

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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.