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Finding the Fourth Proportional to 81,662.40, 112,687.20 and 45,849.60

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Solution

The fourth proportional to 81,662.40, 112,687.20 and 45,849.60 is: 63,268.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,662.40 : 112,687.20 = 45,849.60 : x
  2. Step 2: Convert to fraction form
    81,662.40/112,687.20 = 45,849.60/x
  3. Step 3: Cross multiply
    81,662.40x = 112,687.20 × 45,849.60
  4. Step 4: Simplify right side
    81,662.40x = 5,166,663,045.12
  5. Step 5: Solve for x
    x = 5,166,663,045.12/81,662.40
  6. Step 6: Final answer
    x = 63,268.57

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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.