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Finding the Fourth Proportional to 67,219, 92,763.84 and 40,362.64

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Solution

The fourth proportional to 67,219, 92,763.84 and 40,362.64 is: 55,701.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,219 : 92,763.84 = 40,362.64 : x
  2. Step 2: Convert to fraction form
    67,219/92,763.84 = 40,362.64/x
  3. Step 3: Cross multiply
    67,219x = 92,763.84 × 40,362.64
  4. Step 4: Simplify right side
    67,219x = 3,744,193,478.94
  5. Step 5: Solve for x
    x = 3,744,193,478.94/67,219
  6. Step 6: Final answer
    x = 55,701.42

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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.