Home / 47,711.40-71,567.10-12,654.60

Finding the Fourth Proportional to 47,711.40, 71,567.10 and 12,654.60

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Solution

The fourth proportional to 47,711.40, 71,567.10 and 12,654.60 is: 18,981.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,711.40 : 71,567.10 = 12,654.60 : x
  2. Step 2: Convert to fraction form
    47,711.40/71,567.10 = 12,654.60/x
  3. Step 3: Cross multiply
    47,711.40x = 71,567.10 × 12,654.60
  4. Step 4: Simplify right side
    47,711.40x = 905,653,023.66
  5. Step 5: Solve for x
    x = 905,653,023.66/47,711.40
  6. Step 6: Final answer
    x = 18,981.90

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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.