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Finding the Fourth Proportional to 85,488.48, 117,866.16 and 55,222.56

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Solution

The fourth proportional to 85,488.48, 117,866.16 and 55,222.56 is: 76,137.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,488.48 : 117,866.16 = 55,222.56 : x
  2. Step 2: Convert to fraction form
    85,488.48/117,866.16 = 55,222.56/x
  3. Step 3: Cross multiply
    85,488.48x = 117,866.16 × 55,222.56
  4. Step 4: Simplify right side
    85,488.48x = 6,508,871,092.57
  5. Step 5: Solve for x
    x = 6,508,871,092.57/85,488.48
  6. Step 6: Final answer
    x = 76,137.41

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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.