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Finding the Fourth Proportional to 66,468.30, 99,702.45 and 22,101.90

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Solution

The fourth proportional to 66,468.30, 99,702.45 and 22,101.90 is: 33,152.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,468.30 : 99,702.45 = 22,101.90 : x
  2. Step 2: Convert to fraction form
    66,468.30/99,702.45 = 22,101.90/x
  3. Step 3: Cross multiply
    66,468.30x = 99,702.45 × 22,101.90
  4. Step 4: Simplify right side
    66,468.30x = 2,203,613,579.66
  5. Step 5: Solve for x
    x = 2,203,613,579.66/66,468.30
  6. Step 6: Final answer
    x = 33,152.85

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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.