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Finding the Fourth Proportional to 85,130.82, 127,774.92 and 43,040.52

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Solution

The fourth proportional to 85,130.82, 127,774.92 and 43,040.52 is: 64,600.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,130.82 : 127,774.92 = 43,040.52 : x
  2. Step 2: Convert to fraction form
    85,130.82/127,774.92 = 43,040.52/x
  3. Step 3: Cross multiply
    85,130.82x = 127,774.92 × 43,040.52
  4. Step 4: Simplify right side
    85,130.82x = 5,499,498,999.76
  5. Step 5: Solve for x
    x = 5,499,498,999.76/85,130.82
  6. Step 6: Final answer
    x = 64,600.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.