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Finding the Fourth Proportional to 66,199.70, 91,267.80 and 54,827.30

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Solution

The fourth proportional to 66,199.70, 91,267.80 and 54,827.30 is: 75,588.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,199.70 : 91,267.80 = 54,827.30 : x
  2. Step 2: Convert to fraction form
    66,199.70/91,267.80 = 54,827.30/x
  3. Step 3: Cross multiply
    66,199.70x = 91,267.80 × 54,827.30
  4. Step 4: Simplify right side
    66,199.70x = 5,003,967,050.94
  5. Step 5: Solve for x
    x = 5,003,967,050.94/66,199.70
  6. Step 6: Final answer
    x = 75,588.97

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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.