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Finding the Fourth Proportional to 71,116.94, 106,674.10 and 21,230.87

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Solution

The fourth proportional to 71,116.94, 106,674.10 and 21,230.87 is: 31,845.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,116.94 : 106,674.10 = 21,230.87 : x
  2. Step 2: Convert to fraction form
    71,116.94/106,674.10 = 21,230.87/x
  3. Step 3: Cross multiply
    71,116.94x = 106,674.10 × 21,230.87
  4. Step 4: Simplify right side
    71,116.94x = 2,264,783,363.02
  5. Step 5: Solve for x
    x = 2,264,783,363.02/71,116.94
  6. Step 6: Final answer
    x = 31,845.90

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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.