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Finding the Fourth Proportional to 66,308.67, 99,462.03 and 16,388.78

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Solution

The fourth proportional to 66,308.67, 99,462.03 and 16,388.78 is: 24,582.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,308.67 : 99,462.03 = 16,388.78 : x
  2. Step 2: Convert to fraction form
    66,308.67/99,462.03 = 16,388.78/x
  3. Step 3: Cross multiply
    66,308.67x = 99,462.03 × 16,388.78
  4. Step 4: Simplify right side
    66,308.67x = 1,630,060,830.71
  5. Step 5: Solve for x
    x = 1,630,060,830.71/66,308.67
  6. Step 6: Final answer
    x = 24,582.92

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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.