Home / 47,857.14-71,780.67-12,800.34

Finding the Fourth Proportional to 47,857.14, 71,780.67 and 12,800.34

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Solution

The fourth proportional to 47,857.14, 71,780.67 and 12,800.34 is: 19,199.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,857.14 : 71,780.67 = 12,800.34 : x
  2. Step 2: Convert to fraction form
    47,857.14/71,780.67 = 12,800.34/x
  3. Step 3: Cross multiply
    47,857.14x = 71,780.67 × 12,800.34
  4. Step 4: Simplify right side
    47,857.14x = 918,816,981.43
  5. Step 5: Solve for x
    x = 918,816,981.43/47,857.14
  6. Step 6: Final answer
    x = 19,199.16

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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.