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Finding the Fourth Proportional to 66,291.60, 99,437.40 and 16,371.30

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Solution

The fourth proportional to 66,291.60, 99,437.40 and 16,371.30 is: 24,556.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,291.60 : 99,437.40 = 16,371.30 : x
  2. Step 2: Convert to fraction form
    66,291.60/99,437.40 = 16,371.30/x
  3. Step 3: Cross multiply
    66,291.60x = 99,437.40 × 16,371.30
  4. Step 4: Simplify right side
    66,291.60x = 1,627,919,506.62
  5. Step 5: Solve for x
    x = 1,627,919,506.62/66,291.60
  6. Step 6: Final answer
    x = 24,556.95

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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.