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Finding the Fourth Proportional to 85,940.25, 118,595.73 and 47,697.57

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Solution

The fourth proportional to 85,940.25, 118,595.73 and 47,697.57 is: 65,821.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,940.25 : 118,595.73 = 47,697.57 : x
  2. Step 2: Convert to fraction form
    85,940.25/118,595.73 = 47,697.57/x
  3. Step 3: Cross multiply
    85,940.25x = 118,595.73 × 47,697.57
  4. Step 4: Simplify right side
    85,940.25x = 5,656,728,133.38
  5. Step 5: Solve for x
    x = 5,656,728,133.38/85,940.25
  6. Step 6: Final answer
    x = 65,821.64

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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.