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Finding the Fourth Proportional to 66,687.15, 100,101.22 and 65,181.23

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Solution

The fourth proportional to 66,687.15, 100,101.22 and 65,181.23 is: 97,840.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,687.15 : 100,101.22 = 65,181.23 : x
  2. Step 2: Convert to fraction form
    66,687.15/100,101.22 = 65,181.23/x
  3. Step 3: Cross multiply
    66,687.15x = 100,101.22 × 65,181.23
  4. Step 4: Simplify right side
    66,687.15x = 6,524,720,644.10
  5. Step 5: Solve for x
    x = 6,524,720,644.10/66,687.15
  6. Step 6: Final answer
    x = 97,840.75

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1.5x scale

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.