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Finding the Fourth Proportional to 85,472.38, 118,007.58 and 76,504.60

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Solution

The fourth proportional to 85,472.38, 118,007.58 and 76,504.60 is: 105,626.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,472.38 : 118,007.58 = 76,504.60 : x
  2. Step 2: Convert to fraction form
    85,472.38/118,007.58 = 76,504.60/x
  3. Step 3: Cross multiply
    85,472.38x = 118,007.58 × 76,504.60
  4. Step 4: Simplify right side
    85,472.38x = 9,028,122,704.87
  5. Step 5: Solve for x
    x = 9,028,122,704.87/85,472.38
  6. Step 6: Final answer
    x = 105,626.20

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1.5x scale

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.