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Finding the Fourth Proportional to 66,506.40, 99,759.60 and 27,091.80

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Solution

The fourth proportional to 66,506.40, 99,759.60 and 27,091.80 is: 40,637.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,506.40 : 99,759.60 = 27,091.80 : x
  2. Step 2: Convert to fraction form
    66,506.40/99,759.60 = 27,091.80/x
  3. Step 3: Cross multiply
    66,506.40x = 99,759.60 × 27,091.80
  4. Step 4: Simplify right side
    66,506.40x = 2,702,667,131.28
  5. Step 5: Solve for x
    x = 2,702,667,131.28/66,506.40
  6. Step 6: Final answer
    x = 40,637.70

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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.