Home / 66,618.09-91,829.39-45,360.81

Finding the Fourth Proportional to 66,618.09, 91,829.39 and 45,360.81

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Solution

The fourth proportional to 66,618.09, 91,829.39 and 45,360.81 is: 62,527.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,618.09 : 91,829.39 = 45,360.81 : x
  2. Step 2: Convert to fraction form
    66,618.09/91,829.39 = 45,360.81/x
  3. Step 3: Cross multiply
    66,618.09x = 91,829.39 × 45,360.81
  4. Step 4: Simplify right side
    66,618.09x = 4,165,455,512.21
  5. Step 5: Solve for x
    x = 4,165,455,512.21/66,618.09
  6. Step 6: Final answer
    x = 62,527.39

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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.