Home / 47,685.86-71,520.68-12,629.06

Finding the Fourth Proportional to 47,685.86, 71,520.68 and 12,629.06

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Solution

The fourth proportional to 47,685.86, 71,520.68 and 12,629.06 is: 18,941.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,685.86 : 71,520.68 = 12,629.06 : x
  2. Step 2: Convert to fraction form
    47,685.86/71,520.68 = 12,629.06/x
  3. Step 3: Cross multiply
    47,685.86x = 71,520.68 × 12,629.06
  4. Step 4: Simplify right side
    47,685.86x = 903,238,538.21
  5. Step 5: Solve for x
    x = 903,238,538.21/47,685.86
  6. Step 6: Final answer
    x = 18,941.44

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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.