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Finding the Fourth Proportional to 52,447.40, 78,663.90 and 17,383.40

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Solution

The fourth proportional to 52,447.40, 78,663.90 and 17,383.40 is: 26,072.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,447.40 : 78,663.90 = 17,383.40 : x
  2. Step 2: Convert to fraction form
    52,447.40/78,663.90 = 17,383.40/x
  3. Step 3: Cross multiply
    52,447.40x = 78,663.90 × 17,383.40
  4. Step 4: Simplify right side
    52,447.40x = 1,367,446,039.26
  5. Step 5: Solve for x
    x = 1,367,446,039.26/52,447.40
  6. Step 6: Final answer
    x = 26,072.71

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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.