Home / 66,086.45-91,240.58-45,425.51

Finding the Fourth Proportional to 66,086.45, 91,240.58 and 45,425.51

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Solution

The fourth proportional to 66,086.45, 91,240.58 and 45,425.51 is: 62,715.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,086.45 : 91,240.58 = 45,425.51 : x
  2. Step 2: Convert to fraction form
    66,086.45/91,240.58 = 45,425.51/x
  3. Step 3: Cross multiply
    66,086.45x = 91,240.58 × 45,425.51
  4. Step 4: Simplify right side
    66,086.45x = 4,144,649,195.87
  5. Step 5: Solve for x
    x = 4,144,649,195.87/66,086.45
  6. Step 6: Final answer
    x = 62,715.57

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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.