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Finding the Fourth Proportional to 79,189.89, 109,283.82 and 45,197.71

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Solution

The fourth proportional to 79,189.89, 109,283.82 and 45,197.71 is: 62,373.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,189.89 : 109,283.82 = 45,197.71 : x
  2. Step 2: Convert to fraction form
    79,189.89/109,283.82 = 45,197.71/x
  3. Step 3: Cross multiply
    79,189.89x = 109,283.82 × 45,197.71
  4. Step 4: Simplify right side
    79,189.89x = 4,939,378,178.06
  5. Step 5: Solve for x
    x = 4,939,378,178.06/79,189.89
  6. Step 6: Final answer
    x = 62,373.85

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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.