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Finding the Fourth Proportional to 66,467.70, 99,701.55 and 50,721.30

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Solution

The fourth proportional to 66,467.70, 99,701.55 and 50,721.30 is: 76,081.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,467.70 : 99,701.55 = 50,721.30 : x
  2. Step 2: Convert to fraction form
    66,467.70/99,701.55 = 50,721.30/x
  3. Step 3: Cross multiply
    66,467.70x = 99,701.55 × 50,721.30
  4. Step 4: Simplify right side
    66,467.70x = 5,056,992,228.02
  5. Step 5: Solve for x
    x = 5,056,992,228.02/66,467.70
  6. Step 6: Final answer
    x = 76,081.95

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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.