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Finding the Fourth Proportional to 74,886, 103,343.20 and 40,893.62

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Solution

The fourth proportional to 74,886, 103,343.20 and 40,893.62 is: 56,433.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,886 : 103,343.20 = 40,893.62 : x
  2. Step 2: Convert to fraction form
    74,886/103,343.20 = 40,893.62/x
  3. Step 3: Cross multiply
    74,886x = 103,343.20 × 40,893.62
  4. Step 4: Simplify right side
    74,886x = 4,226,077,550.38
  5. Step 5: Solve for x
    x = 4,226,077,550.38/74,886
  6. Step 6: Final answer
    x = 56,433.48

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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.