Home / 66,525.60-91,781.20-51,216.84

Finding the Fourth Proportional to 66,525.60, 91,781.20 and 51,216.84

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Solution

The fourth proportional to 66,525.60, 91,781.20 and 51,216.84 is: 70,660.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,525.60 : 91,781.20 = 51,216.84 : x
  2. Step 2: Convert to fraction form
    66,525.60/91,781.20 = 51,216.84/x
  3. Step 3: Cross multiply
    66,525.60x = 91,781.20 × 51,216.84
  4. Step 4: Simplify right side
    66,525.60x = 4,700,743,035.41
  5. Step 5: Solve for x
    x = 4,700,743,035.41/66,525.60
  6. Step 6: Final answer
    x = 70,660.66

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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.