Home / 80,916.76-121,064.10-49,321.09

Finding the Fourth Proportional to 80,916.76, 121,064.10 and 49,321.09

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Solution

The fourth proportional to 80,916.76, 121,064.10 and 49,321.09 is: 73,792.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,916.76 : 121,064.10 = 49,321.09 : x
  2. Step 2: Convert to fraction form
    80,916.76/121,064.10 = 49,321.09/x
  3. Step 3: Cross multiply
    80,916.76x = 121,064.10 × 49,321.09
  4. Step 4: Simplify right side
    80,916.76x = 5,971,013,371.87
  5. Step 5: Solve for x
    x = 5,971,013,371.87/80,916.76
  6. Step 6: Final answer
    x = 73,792.05

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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.