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Finding the Fourth Proportional to 112,845, 155,726.91 and 62,544

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Solution

The fourth proportional to 112,845, 155,726.91 and 62,544 is: 86,311.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,845 : 155,726.91 = 62,544 : x
  2. Step 2: Convert to fraction form
    112,845/155,726.91 = 62,544/x
  3. Step 3: Cross multiply
    112,845x = 155,726.91 × 62,544
  4. Step 4: Simplify right side
    112,845x = 9,739,783,859.04
  5. Step 5: Solve for x
    x = 9,739,783,859.04/112,845
  6. Step 6: Final answer
    x = 86,311.17

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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.