Home / 66,020.96-91,100.74-42,161.60

Finding the Fourth Proportional to 66,020.96, 91,100.74 and 42,161.60

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Solution

The fourth proportional to 66,020.96, 91,100.74 and 42,161.60 is: 58,177.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,020.96 : 91,100.74 = 42,161.60 : x
  2. Step 2: Convert to fraction form
    66,020.96/91,100.74 = 42,161.60/x
  3. Step 3: Cross multiply
    66,020.96x = 91,100.74 × 42,161.60
  4. Step 4: Simplify right side
    66,020.96x = 3,840,952,959.58
  5. Step 5: Solve for x
    x = 3,840,952,959.58/66,020.96
  6. Step 6: Final answer
    x = 58,177.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.