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Finding the Fourth Proportional to 85,732.60, 118,308.24 and 47,490.60

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Solution

The fourth proportional to 85,732.60, 118,308.24 and 47,490.60 is: 65,535.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,732.60 : 118,308.24 = 47,490.60 : x
  2. Step 2: Convert to fraction form
    85,732.60/118,308.24 = 47,490.60/x
  3. Step 3: Cross multiply
    85,732.60x = 118,308.24 × 47,490.60
  4. Step 4: Simplify right side
    85,732.60x = 5,618,529,302.54
  5. Step 5: Solve for x
    x = 5,618,529,302.54/85,732.60
  6. Step 6: Final answer
    x = 65,535.51

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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.