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Finding the Fourth Proportional to 66,102.74, 99,133.08 and 21,719.26

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Solution

The fourth proportional to 66,102.74, 99,133.08 and 21,719.26 is: 32,571.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,102.74 : 99,133.08 = 21,719.26 : x
  2. Step 2: Convert to fraction form
    66,102.74/99,133.08 = 21,719.26/x
  3. Step 3: Cross multiply
    66,102.74x = 99,133.08 × 21,719.26
  4. Step 4: Simplify right side
    66,102.74x = 2,153,097,139.12
  5. Step 5: Solve for x
    x = 2,153,097,139.12/66,102.74
  6. Step 6: Final answer
    x = 32,571.98

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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.