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Finding the Fourth Proportional to 85,166.96, 127,694.80 and 40,792.28

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Solution

The fourth proportional to 85,166.96, 127,694.80 and 40,792.28 is: 61,161.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,166.96 : 127,694.80 = 40,792.28 : x
  2. Step 2: Convert to fraction form
    85,166.96/127,694.80 = 40,792.28/x
  3. Step 3: Cross multiply
    85,166.96x = 127,694.80 × 40,792.28
  4. Step 4: Simplify right side
    85,166.96x = 5,208,962,036.14
  5. Step 5: Solve for x
    x = 5,208,962,036.14/85,166.96
  6. Step 6: Final answer
    x = 61,161.77

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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.