Home / 74,942.12-103,417.04-40,951.78

Finding the Fourth Proportional to 74,942.12, 103,417.04 and 40,951.78

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Solution

The fourth proportional to 74,942.12, 103,417.04 and 40,951.78 is: 56,511.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,942.12 : 103,417.04 = 40,951.78 : x
  2. Step 2: Convert to fraction form
    74,942.12/103,417.04 = 40,951.78/x
  3. Step 3: Cross multiply
    74,942.12x = 103,417.04 × 40,951.78
  4. Step 4: Simplify right side
    74,942.12x = 4,235,111,714.17
  5. Step 5: Solve for x
    x = 4,235,111,714.17/74,942.12
  6. Step 6: Final answer
    x = 56,511.77

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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.