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Finding the Fourth Proportional to 47,405.16, 71,108.03 and 15,815.15

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Solution

The fourth proportional to 47,405.16, 71,108.03 and 15,815.15 is: 23,722.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,405.16 : 71,108.03 = 15,815.15 : x
  2. Step 2: Convert to fraction form
    47,405.16/71,108.03 = 15,815.15/x
  3. Step 3: Cross multiply
    47,405.16x = 71,108.03 × 15,815.15
  4. Step 4: Simplify right side
    47,405.16x = 1,124,584,160.65
  5. Step 5: Solve for x
    x = 1,124,584,160.65/47,405.16
  6. Step 6: Final answer
    x = 23,722.82

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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.