Home / 74,949.78-103,431.15-40,957.86

Finding the Fourth Proportional to 74,949.78, 103,431.15 and 40,957.86

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Solution

The fourth proportional to 74,949.78, 103,431.15 and 40,957.86 is: 56,522.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,949.78 : 103,431.15 = 40,957.86 : x
  2. Step 2: Convert to fraction form
    74,949.78/103,431.15 = 40,957.86/x
  3. Step 3: Cross multiply
    74,949.78x = 103,431.15 × 40,957.86
  4. Step 4: Simplify right side
    74,949.78x = 4,236,318,561.34
  5. Step 5: Solve for x
    x = 4,236,318,561.34/74,949.78
  6. Step 6: Final answer
    x = 56,522.09

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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.