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Finding the Fourth Proportional to 84,781.44, 127,260.72 and 62,619.84

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Solution

The fourth proportional to 84,781.44, 127,260.72 and 62,619.84 is: 93,995.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,781.44 : 127,260.72 = 62,619.84 : x
  2. Step 2: Convert to fraction form
    84,781.44/127,260.72 = 62,619.84/x
  3. Step 3: Cross multiply
    84,781.44x = 127,260.72 × 62,619.84
  4. Step 4: Simplify right side
    84,781.44x = 7,969,045,924.68
  5. Step 5: Solve for x
    x = 7,969,045,924.68/84,781.44
  6. Step 6: Final answer
    x = 93,995.17

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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.