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Finding the Fourth Proportional to 66,434.69, 99,635.00 and 19,676.63

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Solution

The fourth proportional to 66,434.69, 99,635.00 and 19,676.63 is: 29,509.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,434.69 : 99,635.00 = 19,676.63 : x
  2. Step 2: Convert to fraction form
    66,434.69/99,635.00 = 19,676.63/x
  3. Step 3: Cross multiply
    66,434.69x = 99,635.00 × 19,676.63
  4. Step 4: Simplify right side
    66,434.69x = 1,960,480,433.49
  5. Step 5: Solve for x
    x = 1,960,480,433.49/66,434.69
  6. Step 6: Final answer
    x = 29,509.89

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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.