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Finding the Fourth Proportional to 47,672.65, 71,520.53 and 14,390.72

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Solution

The fourth proportional to 47,672.65, 71,520.53 and 14,390.72 is: 21,589.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,672.65 : 71,520.53 = 14,390.72 : x
  2. Step 2: Convert to fraction form
    47,672.65/71,520.53 = 14,390.72/x
  3. Step 3: Cross multiply
    47,672.65x = 71,520.53 × 14,390.72
  4. Step 4: Simplify right side
    47,672.65x = 1,029,232,109.28
  5. Step 5: Solve for x
    x = 1,029,232,109.28/47,672.65
  6. Step 6: Final answer
    x = 21,589.57

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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.