Home / 66,146.31-99,231.77-21,776.18

Finding the Fourth Proportional to 66,146.31, 99,231.77 and 21,776.18

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Solution

The fourth proportional to 66,146.31, 99,231.77 and 21,776.18 is: 32,668.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,146.31 : 99,231.77 = 21,776.18 : x
  2. Step 2: Convert to fraction form
    66,146.31/99,231.77 = 21,776.18/x
  3. Step 3: Cross multiply
    66,146.31x = 99,231.77 × 21,776.18
  4. Step 4: Simplify right side
    66,146.31x = 2,160,889,187.76
  5. Step 5: Solve for x
    x = 2,160,889,187.76/66,146.31
  6. Step 6: Final answer
    x = 32,668.33

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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.