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Finding the Fourth Proportional to 55,687, 83,528.88 and 20,625.88

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Solution

The fourth proportional to 55,687, 83,528.88 and 20,625.88 is: 30,938.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,687 : 83,528.88 = 20,625.88 : x
  2. Step 2: Convert to fraction form
    55,687/83,528.88 = 20,625.88/x
  3. Step 3: Cross multiply
    55,687x = 83,528.88 × 20,625.88
  4. Step 4: Simplify right side
    55,687x = 1,722,856,655.41
  5. Step 5: Solve for x
    x = 1,722,856,655.41/55,687
  6. Step 6: Final answer
    x = 30,938.22

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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.