Home / 85,680.42-118,242.67-47,439.97

Finding the Fourth Proportional to 85,680.42, 118,242.67 and 47,439.97

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Solution

The fourth proportional to 85,680.42, 118,242.67 and 47,439.97 is: 65,469.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,680.42 : 118,242.67 = 47,439.97 : x
  2. Step 2: Convert to fraction form
    85,680.42/118,242.67 = 47,439.97/x
  3. Step 3: Cross multiply
    85,680.42x = 118,242.67 × 47,439.97
  4. Step 4: Simplify right side
    85,680.42x = 5,609,428,717.52
  5. Step 5: Solve for x
    x = 5,609,428,717.52/85,680.42
  6. Step 6: Final answer
    x = 65,469.20

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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.