Home / 74,364.12-102,622.61-40,372.60

Finding the Fourth Proportional to 74,364.12, 102,622.61 and 40,372.60

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Solution

The fourth proportional to 74,364.12, 102,622.61 and 40,372.60 is: 55,714.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,364.12 : 102,622.61 = 40,372.60 : x
  2. Step 2: Convert to fraction form
    74,364.12/102,622.61 = 40,372.60/x
  3. Step 3: Cross multiply
    74,364.12x = 102,622.61 × 40,372.60
  4. Step 4: Simplify right side
    74,364.12x = 4,143,141,584.49
  5. Step 5: Solve for x
    x = 4,143,141,584.49/74,364.12
  6. Step 6: Final answer
    x = 55,714.26

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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.