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Finding the Fourth Proportional to 66,294.28, 91,487.12 and 36,080.80

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Solution

The fourth proportional to 66,294.28, 91,487.12 and 36,080.80 is: 49,792.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,294.28 : 91,487.12 = 36,080.80 : x
  2. Step 2: Convert to fraction form
    66,294.28/91,487.12 = 36,080.80/x
  3. Step 3: Cross multiply
    66,294.28x = 91,487.12 × 36,080.80
  4. Step 4: Simplify right side
    66,294.28x = 3,300,928,479.30
  5. Step 5: Solve for x
    x = 3,300,928,479.30/66,294.28
  6. Step 6: Final answer
    x = 49,792.06

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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.