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Finding the Fourth Proportional to 85,092.70, 127,444.80 and 40,750.78

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Solution

The fourth proportional to 85,092.70, 127,444.80 and 40,750.78 is: 61,033.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,092.70 : 127,444.80 = 40,750.78 : x
  2. Step 2: Convert to fraction form
    85,092.70/127,444.80 = 40,750.78/x
  3. Step 3: Cross multiply
    85,092.70x = 127,444.80 × 40,750.78
  4. Step 4: Simplify right side
    85,092.70x = 5,193,475,006.94
  5. Step 5: Solve for x
    x = 5,193,475,006.94/85,092.70
  6. Step 6: Final answer
    x = 61,033.14

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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.