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Finding the Fourth Proportional to 66,880.40, 100,369.20 and 27,465.80

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Solution

The fourth proportional to 66,880.40, 100,369.20 and 27,465.80 is: 41,218.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,880.40 : 100,369.20 = 27,465.80 : x
  2. Step 2: Convert to fraction form
    66,880.40/100,369.20 = 27,465.80/x
  3. Step 3: Cross multiply
    66,880.40x = 100,369.20 × 27,465.80
  4. Step 4: Simplify right side
    66,880.40x = 2,756,720,373.36
  5. Step 5: Solve for x
    x = 2,756,720,373.36/66,880.40
  6. Step 6: Final answer
    x = 41,218.66

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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.