Home / 66,000.39-91,073.77-40,507.81

Finding the Fourth Proportional to 66,000.39, 91,073.77 and 40,507.81

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Solution

The fourth proportional to 66,000.39, 91,073.77 and 40,507.81 is: 55,896.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,000.39 : 91,073.77 = 40,507.81 : x
  2. Step 2: Convert to fraction form
    66,000.39/91,073.77 = 40,507.81/x
  3. Step 3: Cross multiply
    66,000.39x = 91,073.77 × 40,507.81
  4. Step 4: Simplify right side
    66,000.39x = 3,689,198,971.14
  5. Step 5: Solve for x
    x = 3,689,198,971.14/66,000.39
  6. Step 6: Final answer
    x = 55,896.62

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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.