Home / 47,943.69-71,890.17-21,278.08

Finding the Fourth Proportional to 47,943.69, 71,890.17 and 21,278.08

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Solution

The fourth proportional to 47,943.69, 71,890.17 and 21,278.08 is: 31,905.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,943.69 : 71,890.17 = 21,278.08 : x
  2. Step 2: Convert to fraction form
    47,943.69/71,890.17 = 21,278.08/x
  3. Step 3: Cross multiply
    47,943.69x = 71,890.17 × 21,278.08
  4. Step 4: Simplify right side
    47,943.69x = 1,529,684,788.47
  5. Step 5: Solve for x
    x = 1,529,684,788.47/47,943.69
  6. Step 6: Final answer
    x = 31,905.86

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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.