Home / 66,172.06-91,280.48-40,660.71

Finding the Fourth Proportional to 66,172.06, 91,280.48 and 40,660.71

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Solution

The fourth proportional to 66,172.06, 91,280.48 and 40,660.71 is: 56,089.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,172.06 : 91,280.48 = 40,660.71 : x
  2. Step 2: Convert to fraction form
    66,172.06/91,280.48 = 40,660.71/x
  3. Step 3: Cross multiply
    66,172.06x = 91,280.48 × 40,660.71
  4. Step 4: Simplify right side
    66,172.06x = 3,711,529,125.94
  5. Step 5: Solve for x
    x = 3,711,529,125.94/66,172.06
  6. Step 6: Final answer
    x = 56,089.07

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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.