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Finding the Fourth Proportional to 97,889.72, 135,087.82 and 55,448.21

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Solution

The fourth proportional to 97,889.72, 135,087.82 and 55,448.21 is: 76,518.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,889.72 : 135,087.82 = 55,448.21 : x
  2. Step 2: Convert to fraction form
    97,889.72/135,087.82 = 55,448.21/x
  3. Step 3: Cross multiply
    97,889.72x = 135,087.82 × 55,448.21
  4. Step 4: Simplify right side
    97,889.72x = 7,490,378,010.90
  5. Step 5: Solve for x
    x = 7,490,378,010.90/97,889.72
  6. Step 6: Final answer
    x = 76,518.54

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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.