Home / 66,268.72-99,382.02-21,887.20

Finding the Fourth Proportional to 66,268.72, 99,382.02 and 21,887.20

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Solution

The fourth proportional to 66,268.72, 99,382.02 and 21,887.20 is: 32,823.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,268.72 : 99,382.02 = 21,887.20 : x
  2. Step 2: Convert to fraction form
    66,268.72/99,382.02 = 21,887.20/x
  3. Step 3: Cross multiply
    66,268.72x = 99,382.02 × 21,887.20
  4. Step 4: Simplify right side
    66,268.72x = 2,175,194,148.14
  5. Step 5: Solve for x
    x = 2,175,194,148.14/66,268.72
  6. Step 6: Final answer
    x = 32,823.84

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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.