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Finding the Fourth Proportional to 79,178.45, 109,266.27 and 43,369.74

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Solution

The fourth proportional to 79,178.45, 109,266.27 and 43,369.74 is: 59,850.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,178.45 : 109,266.27 = 43,369.74 : x
  2. Step 2: Convert to fraction form
    79,178.45/109,266.27 = 43,369.74/x
  3. Step 3: Cross multiply
    79,178.45x = 109,266.27 × 43,369.74
  4. Step 4: Simplify right side
    79,178.45x = 4,738,849,720.67
  5. Step 5: Solve for x
    x = 4,738,849,720.67/79,178.45
  6. Step 6: Final answer
    x = 59,850.25

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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.