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Finding the Fourth Proportional to 66,911.59, 100,384.26 and 47,228.59

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Solution

The fourth proportional to 66,911.59, 100,384.26 and 47,228.59 is: 70,854.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,911.59 : 100,384.26 = 47,228.59 : x
  2. Step 2: Convert to fraction form
    66,911.59/100,384.26 = 47,228.59/x
  3. Step 3: Cross multiply
    66,911.59x = 100,384.26 × 47,228.59
  4. Step 4: Simplify right side
    66,911.59x = 4,741,007,057.99
  5. Step 5: Solve for x
    x = 4,741,007,057.99/66,911.59
  6. Step 6: Final answer
    x = 70,854.80

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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.