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Finding the Fourth Proportional to 66,094.70, 99,147.66 and 21,122.48

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Solution

The fourth proportional to 66,094.70, 99,147.66 and 21,122.48 is: 31,685.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,094.70 : 99,147.66 = 21,122.48 : x
  2. Step 2: Convert to fraction form
    66,094.70/99,147.66 = 21,122.48/x
  3. Step 3: Cross multiply
    66,094.70x = 99,147.66 × 21,122.48
  4. Step 4: Simplify right side
    66,094.70x = 2,094,244,465.40
  5. Step 5: Solve for x
    x = 2,094,244,465.40/66,094.70
  6. Step 6: Final answer
    x = 31,685.51

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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.