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Finding the Fourth Proportional to 85,243.68, 127,879.82 and 26,065.48

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Solution

The fourth proportional to 85,243.68, 127,879.82 and 26,065.48 is: 39,102.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,243.68 : 127,879.82 = 26,065.48 : x
  2. Step 2: Convert to fraction form
    85,243.68/127,879.82 = 26,065.48/x
  3. Step 3: Cross multiply
    85,243.68x = 127,879.82 × 26,065.48
  4. Step 4: Simplify right side
    85,243.68x = 3,333,248,890.61
  5. Step 5: Solve for x
    x = 3,333,248,890.61/85,243.68
  6. Step 6: Final answer
    x = 39,102.59

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1.5x scale

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.