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Finding the Fourth Proportional to 79,676.87, 109,952.10 and 45,705.47

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Solution

The fourth proportional to 79,676.87, 109,952.10 and 45,705.47 is: 63,072.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,676.87 : 109,952.10 = 45,705.47 : x
  2. Step 2: Convert to fraction form
    79,676.87/109,952.10 = 45,705.47/x
  3. Step 3: Cross multiply
    79,676.87x = 109,952.10 × 45,705.47
  4. Step 4: Simplify right side
    79,676.87x = 5,025,411,858.23
  5. Step 5: Solve for x
    x = 5,025,411,858.23/79,676.87
  6. Step 6: Final answer
    x = 63,072.41

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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.