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Finding the Fourth Proportional to 55,080, 82,619.80 and 15,637.12

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Solution

The fourth proportional to 55,080, 82,619.80 and 15,637.12 is: 23,455.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,080 : 82,619.80 = 15,637.12 : x
  2. Step 2: Convert to fraction form
    55,080/82,619.80 = 15,637.12/x
  3. Step 3: Cross multiply
    55,080x = 82,619.80 × 15,637.12
  4. Step 4: Simplify right side
    55,080x = 1,291,935,481.33
  5. Step 5: Solve for x
    x = 1,291,935,481.33/55,080
  6. Step 6: Final answer
    x = 23,455.62

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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.