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Finding the Fourth Proportional to 55,318, 76,338.84 and 30,167.68

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Solution

The fourth proportional to 55,318, 76,338.84 and 30,167.68 is: 41,631.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,318 : 76,338.84 = 30,167.68 : x
  2. Step 2: Convert to fraction form
    55,318/76,338.84 = 30,167.68/x
  3. Step 3: Cross multiply
    55,318x = 76,338.84 × 30,167.68
  4. Step 4: Simplify right side
    55,318x = 2,302,965,696.69
  5. Step 5: Solve for x
    x = 2,302,965,696.69/55,318
  6. Step 6: Final answer
    x = 41,631.40

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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.