Home / 47,211.78-70,782.29-28,487.39

Finding the Fourth Proportional to 47,211.78, 70,782.29 and 28,487.39

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Solution

The fourth proportional to 47,211.78, 70,782.29 and 28,487.39 is: 42,709.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,211.78 : 70,782.29 = 28,487.39 : x
  2. Step 2: Convert to fraction form
    47,211.78/70,782.29 = 28,487.39/x
  3. Step 3: Cross multiply
    47,211.78x = 70,782.29 × 28,487.39
  4. Step 4: Simplify right side
    47,211.78x = 2,016,402,203.97
  5. Step 5: Solve for x
    x = 2,016,402,203.97/47,211.78
  6. Step 6: Final answer
    x = 42,709.73

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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.