Home / 81,060.72-121,586.49-21,891.93

Finding the Fourth Proportional to 81,060.72, 121,586.49 and 21,891.93

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Solution

The fourth proportional to 81,060.72, 121,586.49 and 21,891.93 is: 32,836.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,060.72 : 121,586.49 = 21,891.93 : x
  2. Step 2: Convert to fraction form
    81,060.72/121,586.49 = 21,891.93/x
  3. Step 3: Cross multiply
    81,060.72x = 121,586.49 × 21,891.93
  4. Step 4: Simplify right side
    81,060.72x = 2,661,762,928.03
  5. Step 5: Solve for x
    x = 2,661,762,928.03/81,060.72
  6. Step 6: Final answer
    x = 32,836.66

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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.