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Finding the Fourth Proportional to 84,672.99, 127,009.69 and 21,493.13

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Solution

The fourth proportional to 84,672.99, 127,009.69 and 21,493.13 is: 32,239.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,672.99 : 127,009.69 = 21,493.13 : x
  2. Step 2: Convert to fraction form
    84,672.99/127,009.69 = 21,493.13/x
  3. Step 3: Cross multiply
    84,672.99x = 127,009.69 × 21,493.13
  4. Step 4: Simplify right side
    84,672.99x = 2,729,835,089.65
  5. Step 5: Solve for x
    x = 2,729,835,089.65/84,672.99
  6. Step 6: Final answer
    x = 32,239.74

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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.