Home / 67,207.14-92,741.10-39,981.78

Finding the Fourth Proportional to 67,207.14, 92,741.10 and 39,981.78

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Solution

The fourth proportional to 67,207.14, 92,741.10 and 39,981.78 is: 55,172.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,207.14 : 92,741.10 = 39,981.78 : x
  2. Step 2: Convert to fraction form
    67,207.14/92,741.10 = 39,981.78/x
  3. Step 3: Cross multiply
    67,207.14x = 92,741.10 × 39,981.78
  4. Step 4: Simplify right side
    67,207.14x = 3,707,954,257.16
  5. Step 5: Solve for x
    x = 3,707,954,257.16/67,207.14
  6. Step 6: Final answer
    x = 55,172.03

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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.