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Finding the Fourth Proportional to 81,648.35, 122,486.88 and 37,279.59

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Solution

The fourth proportional to 81,648.35, 122,486.88 and 37,279.59 is: 55,925.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,648.35 : 122,486.88 = 37,279.59 : x
  2. Step 2: Convert to fraction form
    81,648.35/122,486.88 = 37,279.59/x
  3. Step 3: Cross multiply
    81,648.35x = 122,486.88 × 37,279.59
  4. Step 4: Simplify right side
    81,648.35x = 4,566,261,036.24
  5. Step 5: Solve for x
    x = 4,566,261,036.24/81,648.35
  6. Step 6: Final answer
    x = 55,925.94

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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.