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Finding the Fourth Proportional to 79,390.32, 109,568.68 and 45,849.84

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Solution

The fourth proportional to 79,390.32, 109,568.68 and 45,849.84 is: 63,278.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,390.32 : 109,568.68 = 45,849.84 : x
  2. Step 2: Convert to fraction form
    79,390.32/109,568.68 = 45,849.84/x
  3. Step 3: Cross multiply
    79,390.32x = 109,568.68 × 45,849.84
  4. Step 4: Simplify right side
    79,390.32x = 5,023,706,447.01
  5. Step 5: Solve for x
    x = 5,023,706,447.01/79,390.32
  6. Step 6: Final answer
    x = 63,278.58

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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.