Home / 40,819.70-61,248.38-18,639.87

Finding the Fourth Proportional to 40,819.70, 61,248.38 and 18,639.87

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Solution

The fourth proportional to 40,819.70, 61,248.38 and 18,639.87 is: 27,968.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,819.70 : 61,248.38 = 18,639.87 : x
  2. Step 2: Convert to fraction form
    40,819.70/61,248.38 = 18,639.87/x
  3. Step 3: Cross multiply
    40,819.70x = 61,248.38 × 18,639.87
  4. Step 4: Simplify right side
    40,819.70x = 1,141,661,747.71
  5. Step 5: Solve for x
    x = 1,141,661,747.71/40,819.70
  6. Step 6: Final answer
    x = 27,968.40

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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.