Home / 71,210.76-106,816.50-18,620.36

Finding the Fourth Proportional to 71,210.76, 106,816.50 and 18,620.36

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Solution

The fourth proportional to 71,210.76, 106,816.50 and 18,620.36 is: 27,930.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,210.76 : 106,816.50 = 18,620.36 : x
  2. Step 2: Convert to fraction form
    71,210.76/106,816.50 = 18,620.36/x
  3. Step 3: Cross multiply
    71,210.76x = 106,816.50 × 18,620.36
  4. Step 4: Simplify right side
    71,210.76x = 1,988,961,683.94
  5. Step 5: Solve for x
    x = 1,988,961,683.94/71,210.76
  6. Step 6: Final answer
    x = 27,930.63

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1.5x scale

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.