Home / 47,085.78-70,646.85-20,771.94

Finding the Fourth Proportional to 47,085.78, 70,646.85 and 20,771.94

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Solution

The fourth proportional to 47,085.78, 70,646.85 and 20,771.94 is: 31,165.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,085.78 : 70,646.85 = 20,771.94 : x
  2. Step 2: Convert to fraction form
    47,085.78/70,646.85 = 20,771.94/x
  3. Step 3: Cross multiply
    47,085.78x = 70,646.85 × 20,771.94
  4. Step 4: Simplify right side
    47,085.78x = 1,467,472,129.39
  5. Step 5: Solve for x
    x = 1,467,472,129.39/47,085.78
  6. Step 6: Final answer
    x = 31,165.93

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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.