Home / 66,440.63-91,688.79-36,225.71

Finding the Fourth Proportional to 66,440.63, 91,688.79 and 36,225.71

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Solution

The fourth proportional to 66,440.63, 91,688.79 and 36,225.71 is: 49,991.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,440.63 : 91,688.79 = 36,225.71 : x
  2. Step 2: Convert to fraction form
    66,440.63/91,688.79 = 36,225.71/x
  3. Step 3: Cross multiply
    66,440.63x = 91,688.79 × 36,225.71
  4. Step 4: Simplify right side
    66,440.63x = 3,321,491,516.79
  5. Step 5: Solve for x
    x = 3,321,491,516.79/66,440.63
  6. Step 6: Final answer
    x = 49,991.87

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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.