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Finding the Fourth Proportional to 66,004.80, 99,025.20 and 21,634.08

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Solution

The fourth proportional to 66,004.80, 99,025.20 and 21,634.08 is: 32,457.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,004.80 : 99,025.20 = 21,634.08 : x
  2. Step 2: Convert to fraction form
    66,004.80/99,025.20 = 21,634.08/x
  3. Step 3: Cross multiply
    66,004.80x = 99,025.20 × 21,634.08
  4. Step 4: Simplify right side
    66,004.80x = 2,142,319,098.82
  5. Step 5: Solve for x
    x = 2,142,319,098.82/66,004.80
  6. Step 6: Final answer
    x = 32,457.02

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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.