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Finding the Fourth Proportional to 101,911.37, 140,650.65 and 61,625.40

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Solution

The fourth proportional to 101,911.37, 140,650.65 and 61,625.40 is: 85,050.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,911.37 : 140,650.65 = 61,625.40 : x
  2. Step 2: Convert to fraction form
    101,911.37/140,650.65 = 61,625.40/x
  3. Step 3: Cross multiply
    101,911.37x = 140,650.65 × 61,625.40
  4. Step 4: Simplify right side
    101,911.37x = 8,667,652,566.51
  5. Step 5: Solve for x
    x = 8,667,652,566.51/101,911.37
  6. Step 6: Final answer
    x = 85,050.89

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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.