Home / 66,168.90-99,232.02-21,785.09

Finding the Fourth Proportional to 66,168.90, 99,232.02 and 21,785.09

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Solution

The fourth proportional to 66,168.90, 99,232.02 and 21,785.09 is: 32,670.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,168.90 : 99,232.02 = 21,785.09 : x
  2. Step 2: Convert to fraction form
    66,168.90/99,232.02 = 21,785.09/x
  3. Step 3: Cross multiply
    66,168.90x = 99,232.02 × 21,785.09
  4. Step 4: Simplify right side
    66,168.90x = 2,161,777,990.42
  5. Step 5: Solve for x
    x = 2,161,777,990.42/66,168.90
  6. Step 6: Final answer
    x = 32,670.60

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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.