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Finding the Fourth Proportional to 67,781.92, 93,516.64 and 40,914.22

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Solution

The fourth proportional to 67,781.92, 93,516.64 and 40,914.22 is: 56,448.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,781.92 : 93,516.64 = 40,914.22 : x
  2. Step 2: Convert to fraction form
    67,781.92/93,516.64 = 40,914.22/x
  3. Step 3: Cross multiply
    67,781.92x = 93,516.64 × 40,914.22
  4. Step 4: Simplify right side
    67,781.92x = 3,826,160,382.62
  5. Step 5: Solve for x
    x = 3,826,160,382.62/67,781.92
  6. Step 6: Final answer
    x = 56,448.10

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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.