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Finding the Fourth Proportional to 112,847, 155,729.68 and 62,546

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Solution

The fourth proportional to 112,847, 155,729.68 and 62,546 is: 86,313.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,847 : 155,729.68 = 62,546 : x
  2. Step 2: Convert to fraction form
    112,847/155,729.68 = 62,546/x
  3. Step 3: Cross multiply
    112,847x = 155,729.68 × 62,546
  4. Step 4: Simplify right side
    112,847x = 9,740,268,565.28
  5. Step 5: Solve for x
    x = 9,740,268,565.28/112,847
  6. Step 6: Final answer
    x = 86,313.93

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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.