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Finding the Fourth Proportional to 55,245.38, 76,236 and 31,368.88

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Solution

The fourth proportional to 55,245.38, 76,236 and 31,368.88 is: 43,287.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,245.38 : 76,236 = 31,368.88 : x
  2. Step 2: Convert to fraction form
    55,245.38/76,236 = 31,368.88/x
  3. Step 3: Cross multiply
    55,245.38x = 76,236 × 31,368.88
  4. Step 4: Simplify right side
    55,245.38x = 2,391,437,935.68
  5. Step 5: Solve for x
    x = 2,391,437,935.68/55,245.38
  6. Step 6: Final answer
    x = 43,287.56

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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.