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Finding the Fourth Proportional to 74,813.11, 103,211.11 and 52,165.51

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Solution

The fourth proportional to 74,813.11, 103,211.11 and 52,165.51 is: 71,966.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,813.11 : 103,211.11 = 52,165.51 : x
  2. Step 2: Convert to fraction form
    74,813.11/103,211.11 = 52,165.51/x
  3. Step 3: Cross multiply
    74,813.11x = 103,211.11 × 52,165.51
  4. Step 4: Simplify right side
    74,813.11x = 5,384,059,998.00
  5. Step 5: Solve for x
    x = 5,384,059,998.00/74,813.11
  6. Step 6: Final answer
    x = 71,966.80

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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.