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Finding the Fourth Proportional to 74,730.60, 112,096.71 and 18,571.68

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Solution

The fourth proportional to 74,730.60, 112,096.71 and 18,571.68 is: 27,857.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,730.60 : 112,096.71 = 18,571.68 : x
  2. Step 2: Convert to fraction form
    74,730.60/112,096.71 = 18,571.68/x
  3. Step 3: Cross multiply
    74,730.60x = 112,096.71 × 18,571.68
  4. Step 4: Simplify right side
    74,730.60x = 2,081,824,227.17
  5. Step 5: Solve for x
    x = 2,081,824,227.17/74,730.60
  6. Step 6: Final answer
    x = 27,857.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.