Home / 66,975.12-92,428.56-40,122

Finding the Fourth Proportional to 66,975.12, 92,428.56 and 40,122

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Solution

The fourth proportional to 66,975.12, 92,428.56 and 40,122 is: 55,370.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,975.12 : 92,428.56 = 40,122 : x
  2. Step 2: Convert to fraction form
    66,975.12/92,428.56 = 40,122/x
  3. Step 3: Cross multiply
    66,975.12x = 92,428.56 × 40,122
  4. Step 4: Simplify right side
    66,975.12x = 3,708,418,684.32
  5. Step 5: Solve for x
    x = 3,708,418,684.32/66,975.12
  6. Step 6: Final answer
    x = 55,370.09

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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.