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Finding the Fourth Proportional to 66,960, 92,404.80 and 37,152

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Solution

The fourth proportional to 66,960, 92,404.80 and 37,152 is: 51,269.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,960 : 92,404.80 = 37,152 : x
  2. Step 2: Convert to fraction form
    66,960/92,404.80 = 37,152/x
  3. Step 3: Cross multiply
    66,960x = 92,404.80 × 37,152
  4. Step 4: Simplify right side
    66,960x = 3,433,023,129.60
  5. Step 5: Solve for x
    x = 3,433,023,129.60/66,960
  6. Step 6: Final answer
    x = 51,269.76

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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.