Home / 71,813.10-99,099.39-39,981.33

Finding the Fourth Proportional to 71,813.10, 99,099.39 and 39,981.33

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Solution

The fourth proportional to 71,813.10, 99,099.39 and 39,981.33 is: 55,172.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,813.10 : 99,099.39 = 39,981.33 : x
  2. Step 2: Convert to fraction form
    71,813.10/99,099.39 = 39,981.33/x
  3. Step 3: Cross multiply
    71,813.10x = 99,099.39 × 39,981.33
  4. Step 4: Simplify right side
    71,813.10x = 3,962,125,414.39
  5. Step 5: Solve for x
    x = 3,962,125,414.39/71,813.10
  6. Step 6: Final answer
    x = 55,172.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.