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Finding the Fourth Proportional to 55,268.80, 82,903.20 and 51,988.30

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Solution

The fourth proportional to 55,268.80, 82,903.20 and 51,988.30 is: 77,982.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,268.80 : 82,903.20 = 51,988.30 : x
  2. Step 2: Convert to fraction form
    55,268.80/82,903.20 = 51,988.30/x
  3. Step 3: Cross multiply
    55,268.80x = 82,903.20 × 51,988.30
  4. Step 4: Simplify right side
    55,268.80x = 4,309,996,432.56
  5. Step 5: Solve for x
    x = 4,309,996,432.56/55,268.80
  6. Step 6: Final answer
    x = 77,982.45

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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.