Home / 47,830.66-71,731.40-12,765.76

Finding the Fourth Proportional to 47,830.66, 71,731.40 and 12,765.76

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Solution

The fourth proportional to 47,830.66, 71,731.40 and 12,765.76 is: 19,144.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,830.66 : 71,731.40 = 12,765.76 : x
  2. Step 2: Convert to fraction form
    47,830.66/71,731.40 = 12,765.76/x
  3. Step 3: Cross multiply
    47,830.66x = 71,731.40 × 12,765.76
  4. Step 4: Simplify right side
    47,830.66x = 915,705,836.86
  5. Step 5: Solve for x
    x = 915,705,836.86/47,830.66
  6. Step 6: Final answer
    x = 19,144.75

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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.