Home / 47,178.78-70,772.03-13,447.40

Finding the Fourth Proportional to 47,178.78, 70,772.03 and 13,447.40

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Solution

The fourth proportional to 47,178.78, 70,772.03 and 13,447.40 is: 20,172.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,178.78 : 70,772.03 = 13,447.40 : x
  2. Step 2: Convert to fraction form
    47,178.78/70,772.03 = 13,447.40/x
  3. Step 3: Cross multiply
    47,178.78x = 70,772.03 × 13,447.40
  4. Step 4: Simplify right side
    47,178.78x = 951,699,375.12
  5. Step 5: Solve for x
    x = 951,699,375.12/47,178.78
  6. Step 6: Final answer
    x = 20,172.19

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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.