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Finding the Fourth Proportional to 85,156.60, 127,813.74 and 43,066.48

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Solution

The fourth proportional to 85,156.60, 127,813.74 and 43,066.48 is: 64,639.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,156.60 : 127,813.74 = 43,066.48 : x
  2. Step 2: Convert to fraction form
    85,156.60/127,813.74 = 43,066.48/x
  3. Step 3: Cross multiply
    85,156.60x = 127,813.74 × 43,066.48
  4. Step 4: Simplify right side
    85,156.60x = 5,504,487,877.44
  5. Step 5: Solve for x
    x = 5,504,487,877.44/85,156.60
  6. Step 6: Final answer
    x = 64,639.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.