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Finding the Fourth Proportional to 79,178.49, 109,267.89 and 43,368.51

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Solution

The fourth proportional to 79,178.49, 109,267.89 and 43,368.51 is: 59,849.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,178.49 : 109,267.89 = 43,368.51 : x
  2. Step 2: Convert to fraction form
    79,178.49/109,267.89 = 43,368.51/x
  3. Step 3: Cross multiply
    79,178.49x = 109,267.89 × 43,368.51
  4. Step 4: Simplify right side
    79,178.49x = 4,738,785,580.14
  5. Step 5: Solve for x
    x = 4,738,785,580.14/79,178.49
  6. Step 6: Final answer
    x = 59,849.41

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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.