Home / 66,289.51-91,449.24-39,416.71

Finding the Fourth Proportional to 66,289.51, 91,449.24 and 39,416.71

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Solution

The fourth proportional to 66,289.51, 91,449.24 and 39,416.71 is: 54,377.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,289.51 : 91,449.24 = 39,416.71 : x
  2. Step 2: Convert to fraction form
    66,289.51/91,449.24 = 39,416.71/x
  3. Step 3: Cross multiply
    66,289.51x = 91,449.24 × 39,416.71
  4. Step 4: Simplify right side
    66,289.51x = 3,604,628,172.80
  5. Step 5: Solve for x
    x = 3,604,628,172.80/66,289.51
  6. Step 6: Final answer
    x = 54,377.05

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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.