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Finding the Fourth Proportional to 66,960.16, 100,310.40 and 37,288

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Solution

The fourth proportional to 66,960.16, 100,310.40 and 37,288 is: 55,859.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,960.16 : 100,310.40 = 37,288 : x
  2. Step 2: Convert to fraction form
    66,960.16/100,310.40 = 37,288/x
  3. Step 3: Cross multiply
    66,960.16x = 100,310.40 × 37,288
  4. Step 4: Simplify right side
    66,960.16x = 3,740,374,195.20
  5. Step 5: Solve for x
    x = 3,740,374,195.20/66,960.16
  6. Step 6: Final answer
    x = 55,859.70

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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.