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Finding the Fourth Proportional to 66,166.92, 91,329.66 and 40,334.81

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Solution

The fourth proportional to 66,166.92, 91,329.66 and 40,334.81 is: 55,673.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,166.92 : 91,329.66 = 40,334.81 : x
  2. Step 2: Convert to fraction form
    66,166.92/91,329.66 = 40,334.81/x
  3. Step 3: Cross multiply
    66,166.92x = 91,329.66 × 40,334.81
  4. Step 4: Simplify right side
    66,166.92x = 3,683,764,026.82
  5. Step 5: Solve for x
    x = 3,683,764,026.82/66,166.92
  6. Step 6: Final answer
    x = 55,673.80

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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.