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Finding the Fourth Proportional to 66,271.06, 99,385.53 and 21,889.54

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Solution

The fourth proportional to 66,271.06, 99,385.53 and 21,889.54 is: 32,827.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,271.06 : 99,385.53 = 21,889.54 : x
  2. Step 2: Convert to fraction form
    66,271.06/99,385.53 = 21,889.54/x
  3. Step 3: Cross multiply
    66,271.06x = 99,385.53 × 21,889.54
  4. Step 4: Simplify right side
    66,271.06x = 2,175,503,534.36
  5. Step 5: Solve for x
    x = 2,175,503,534.36/66,271.06
  6. Step 6: Final answer
    x = 32,827.35

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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.