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Finding the Fourth Proportional to 85,989.78, 118,667.97 and 48,267.54

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Solution

The fourth proportional to 85,989.78, 118,667.97 and 48,267.54 is: 66,610.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,989.78 : 118,667.97 = 48,267.54 : x
  2. Step 2: Convert to fraction form
    85,989.78/118,667.97 = 48,267.54/x
  3. Step 3: Cross multiply
    85,989.78x = 118,667.97 × 48,267.54
  4. Step 4: Simplify right side
    85,989.78x = 5,727,810,988.69
  5. Step 5: Solve for x
    x = 5,727,810,988.69/85,989.78
  6. Step 6: Final answer
    x = 66,610.37

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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.