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Finding the Fourth Proportional to 56,751.28, 84,995.68 and 54,783

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Solution

The fourth proportional to 56,751.28, 84,995.68 and 54,783 is: 82,047.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,751.28 : 84,995.68 = 54,783 : x
  2. Step 2: Convert to fraction form
    56,751.28/84,995.68 = 54,783/x
  3. Step 3: Cross multiply
    56,751.28x = 84,995.68 × 54,783
  4. Step 4: Simplify right side
    56,751.28x = 4,656,318,337.44
  5. Step 5: Solve for x
    x = 4,656,318,337.44/56,751.28
  6. Step 6: Final answer
    x = 82,047.81

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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.