Home / 71,210.42-106,821.72-18,619.82

Finding the Fourth Proportional to 71,210.42, 106,821.72 and 18,619.82

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Solution

The fourth proportional to 71,210.42, 106,821.72 and 18,619.82 is: 27,931.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,210.42 : 106,821.72 = 18,619.82 : x
  2. Step 2: Convert to fraction form
    71,210.42/106,821.72 = 18,619.82/x
  3. Step 3: Cross multiply
    71,210.42x = 106,821.72 × 18,619.82
  4. Step 4: Simplify right side
    71,210.42x = 1,989,000,571.28
  5. Step 5: Solve for x
    x = 1,989,000,571.28/71,210.42
  6. Step 6: Final answer
    x = 27,931.32

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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.