Home / 89,723.70-123,878.34-55,782.90

Finding the Fourth Proportional to 89,723.70, 123,878.34 and 55,782.90

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Solution

The fourth proportional to 89,723.70, 123,878.34 and 55,782.90 is: 77,017.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,723.70 : 123,878.34 = 55,782.90 : x
  2. Step 2: Convert to fraction form
    89,723.70/123,878.34 = 55,782.90/x
  3. Step 3: Cross multiply
    89,723.70x = 123,878.34 × 55,782.90
  4. Step 4: Simplify right side
    89,723.70x = 6,910,293,052.39
  5. Step 5: Solve for x
    x = 6,910,293,052.39/89,723.70
  6. Step 6: Final answer
    x = 77,017.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.