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Finding the Fourth Proportional to 66,265.80, 91,461.06 and 43,606.86

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Solution

The fourth proportional to 66,265.80, 91,461.06 and 43,606.86 is: 60,186.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,265.80 : 91,461.06 = 43,606.86 : x
  2. Step 2: Convert to fraction form
    66,265.80/91,461.06 = 43,606.86/x
  3. Step 3: Cross multiply
    66,265.80x = 91,461.06 × 43,606.86
  4. Step 4: Simplify right side
    66,265.80x = 3,988,329,638.87
  5. Step 5: Solve for x
    x = 3,988,329,638.87/66,265.80
  6. Step 6: Final answer
    x = 60,186.85

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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.