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Finding the Fourth Proportional to 66,154.40, 99,265.64 and 36,566.72

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Solution

The fourth proportional to 66,154.40, 99,265.64 and 36,566.72 is: 54,868.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,154.40 : 99,265.64 = 36,566.72 : x
  2. Step 2: Convert to fraction form
    66,154.40/99,265.64 = 36,566.72/x
  3. Step 3: Cross multiply
    66,154.40x = 99,265.64 × 36,566.72
  4. Step 4: Simplify right side
    66,154.40x = 3,629,818,863.50
  5. Step 5: Solve for x
    x = 3,629,818,863.50/66,154.40
  6. Step 6: Final answer
    x = 54,868.90

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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.