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Finding the Fourth Proportional to 66,047.63, 99,050.65 and 21,664.06

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Solution

The fourth proportional to 66,047.63, 99,050.65 and 21,664.06 is: 32,489.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,047.63 : 99,050.65 = 21,664.06 : x
  2. Step 2: Convert to fraction form
    66,047.63/99,050.65 = 21,664.06/x
  3. Step 3: Cross multiply
    66,047.63x = 99,050.65 × 21,664.06
  4. Step 4: Simplify right side
    66,047.63x = 2,145,838,922.85
  5. Step 5: Solve for x
    x = 2,145,838,922.85/66,047.63
  6. Step 6: Final answer
    x = 32,489.27

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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.