Home / 47,819.87-71,730.93-21,160.17

Finding the Fourth Proportional to 47,819.87, 71,730.93 and 21,160.17

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Solution

The fourth proportional to 47,819.87, 71,730.93 and 21,160.17 is: 31,740.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,819.87 : 71,730.93 = 21,160.17 : x
  2. Step 2: Convert to fraction form
    47,819.87/71,730.93 = 21,160.17/x
  3. Step 3: Cross multiply
    47,819.87x = 71,730.93 × 21,160.17
  4. Step 4: Simplify right side
    47,819.87x = 1,517,838,752.41
  5. Step 5: Solve for x
    x = 1,517,838,752.41/47,819.87
  6. Step 6: Final answer
    x = 31,740.76

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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.