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Finding the Fourth Proportional to 79,615.40, 109,823.63 and 49,755.56

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Solution

The fourth proportional to 79,615.40, 109,823.63 and 49,755.56 is: 68,634.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,615.40 : 109,823.63 = 49,755.56 : x
  2. Step 2: Convert to fraction form
    79,615.40/109,823.63 = 49,755.56/x
  3. Step 3: Cross multiply
    79,615.40x = 109,823.63 × 49,755.56
  4. Step 4: Simplify right side
    79,615.40x = 5,464,336,237.66
  5. Step 5: Solve for x
    x = 5,464,336,237.66/79,615.40
  6. Step 6: Final answer
    x = 68,634.16

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1.5x scale

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.