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Finding the Fourth Proportional to 79,480.17, 109,676.28 and 45,480.86

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Solution

The fourth proportional to 79,480.17, 109,676.28 and 45,480.86 is: 62,759.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,480.17 : 109,676.28 = 45,480.86 : x
  2. Step 2: Convert to fraction form
    79,480.17/109,676.28 = 45,480.86/x
  3. Step 3: Cross multiply
    79,480.17x = 109,676.28 × 45,480.86
  4. Step 4: Simplify right side
    79,480.17x = 4,988,171,313.63
  5. Step 5: Solve for x
    x = 4,988,171,313.63/79,480.17
  6. Step 6: Final answer
    x = 62,759.95

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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.