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Finding the Fourth Proportional to 66,607.92, 91,914.51 and 37,930.50

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Solution

The fourth proportional to 66,607.92, 91,914.51 and 37,930.50 is: 52,341.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,607.92 : 91,914.51 = 37,930.50 : x
  2. Step 2: Convert to fraction form
    66,607.92/91,914.51 = 37,930.50/x
  3. Step 3: Cross multiply
    66,607.92x = 91,914.51 × 37,930.50
  4. Step 4: Simplify right side
    66,607.92x = 3,486,363,321.56
  5. Step 5: Solve for x
    x = 3,486,363,321.56/66,607.92
  6. Step 6: Final answer
    x = 52,341.57

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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.