Home / 66,518.64-91,811.46-38,240.76

Finding the Fourth Proportional to 66,518.64, 91,811.46 and 38,240.76

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Solution

The fourth proportional to 66,518.64, 91,811.46 and 38,240.76 is: 52,781.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,518.64 : 91,811.46 = 38,240.76 : x
  2. Step 2: Convert to fraction form
    66,518.64/91,811.46 = 38,240.76/x
  3. Step 3: Cross multiply
    66,518.64x = 91,811.46 × 38,240.76
  4. Step 4: Simplify right side
    66,518.64x = 3,510,940,007.11
  5. Step 5: Solve for x
    x = 3,510,940,007.11/66,518.64
  6. Step 6: Final answer
    x = 52,781.30

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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.