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Finding the Fourth Proportional to 66,006.50, 91,094.14 and 55,740.96

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Solution

The fourth proportional to 66,006.50, 91,094.14 and 55,740.96 is: 76,926.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,006.50 : 91,094.14 = 55,740.96 : x
  2. Step 2: Convert to fraction form
    66,006.50/91,094.14 = 55,740.96/x
  3. Step 3: Cross multiply
    66,006.50x = 91,094.14 × 55,740.96
  4. Step 4: Simplify right side
    66,006.50x = 5,077,675,040.42
  5. Step 5: Solve for x
    x = 5,077,675,040.42/66,006.50
  6. Step 6: Final answer
    x = 76,926.90

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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.