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Finding the Fourth Proportional to 50,918.52, 76,378.65 and 17,639.57

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Solution

The fourth proportional to 50,918.52, 76,378.65 and 17,639.57 is: 26,459.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,918.52 : 76,378.65 = 17,639.57 : x
  2. Step 2: Convert to fraction form
    50,918.52/76,378.65 = 17,639.57/x
  3. Step 3: Cross multiply
    50,918.52x = 76,378.65 × 17,639.57
  4. Step 4: Simplify right side
    50,918.52x = 1,347,286,667.98
  5. Step 5: Solve for x
    x = 1,347,286,667.98/50,918.52
  6. Step 6: Final answer
    x = 26,459.66

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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.