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Finding the Fourth Proportional to 66,152.89, 99,208.41 and 21,769.75

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Solution

The fourth proportional to 66,152.89, 99,208.41 and 21,769.75 is: 32,647.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,152.89 : 99,208.41 = 21,769.75 : x
  2. Step 2: Convert to fraction form
    66,152.89/99,208.41 = 21,769.75/x
  3. Step 3: Cross multiply
    66,152.89x = 99,208.41 × 21,769.75
  4. Step 4: Simplify right side
    66,152.89x = 2,159,742,283.60
  5. Step 5: Solve for x
    x = 2,159,742,283.60/66,152.89
  6. Step 6: Final answer
    x = 32,647.74

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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.