Home / 47,830.86-71,760.12-21,175.86

Finding the Fourth Proportional to 47,830.86, 71,760.12 and 21,175.86

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Solution

The fourth proportional to 47,830.86, 71,760.12 and 21,175.86 is: 31,769.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,830.86 : 71,760.12 = 21,175.86 : x
  2. Step 2: Convert to fraction form
    47,830.86/71,760.12 = 21,175.86/x
  3. Step 3: Cross multiply
    47,830.86x = 71,760.12 × 21,175.86
  4. Step 4: Simplify right side
    47,830.86x = 1,519,582,254.70
  5. Step 5: Solve for x
    x = 1,519,582,254.70/47,830.86
  6. Step 6: Final answer
    x = 31,769.91

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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.