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Finding the Fourth Proportional to 66,287.68, 91,478.10 and 36,074.27

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Solution

The fourth proportional to 66,287.68, 91,478.10 and 36,074.27 is: 49,783.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,287.68 : 91,478.10 = 36,074.27 : x
  2. Step 2: Convert to fraction form
    66,287.68/91,478.10 = 36,074.27/x
  3. Step 3: Cross multiply
    66,287.68x = 91,478.10 × 36,074.27
  4. Step 4: Simplify right side
    66,287.68x = 3,300,005,678.49
  5. Step 5: Solve for x
    x = 3,300,005,678.49/66,287.68
  6. Step 6: Final answer
    x = 49,783.09

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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.