Home / 74,171.60-102,355.08-40,636.88

Finding the Fourth Proportional to 74,171.60, 102,355.08 and 40,636.88

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Solution

The fourth proportional to 74,171.60, 102,355.08 and 40,636.88 is: 56,077.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,171.60 : 102,355.08 = 40,636.88 : x
  2. Step 2: Convert to fraction form
    74,171.60/102,355.08 = 40,636.88/x
  3. Step 3: Cross multiply
    74,171.60x = 102,355.08 × 40,636.88
  4. Step 4: Simplify right side
    74,171.60x = 4,159,391,103.35
  5. Step 5: Solve for x
    x = 4,159,391,103.35/74,171.60
  6. Step 6: Final answer
    x = 56,077.95

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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.