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Finding the Fourth Proportional to 98,118.52, 135,422.22 and 55,681

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Solution

The fourth proportional to 98,118.52, 135,422.22 and 55,681 is: 76,850.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,118.52 : 135,422.22 = 55,681 : x
  2. Step 2: Convert to fraction form
    98,118.52/135,422.22 = 55,681/x
  3. Step 3: Cross multiply
    98,118.52x = 135,422.22 × 55,681
  4. Step 4: Simplify right side
    98,118.52x = 7,540,444,631.82
  5. Step 5: Solve for x
    x = 7,540,444,631.82/98,118.52
  6. Step 6: Final answer
    x = 76,850.37

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1.5x scale

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.