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Finding the Fourth Proportional to 55,321.80, 82,995.04 and 15,875.84

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Solution

The fourth proportional to 55,321.80, 82,995.04 and 15,875.84 is: 23,817.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,321.80 : 82,995.04 = 15,875.84 : x
  2. Step 2: Convert to fraction form
    55,321.80/82,995.04 = 15,875.84/x
  3. Step 3: Cross multiply
    55,321.80x = 82,995.04 × 15,875.84
  4. Step 4: Simplify right side
    55,321.80x = 1,317,615,936.14
  5. Step 5: Solve for x
    x = 1,317,615,936.14/55,321.80
  6. Step 6: Final answer
    x = 23,817.30

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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.