Home / 66,005.20-91,078.45-37,328.77

Finding the Fourth Proportional to 66,005.20, 91,078.45 and 37,328.77

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Solution

The fourth proportional to 66,005.20, 91,078.45 and 37,328.77 is: 51,508.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,005.20 : 91,078.45 = 37,328.77 : x
  2. Step 2: Convert to fraction form
    66,005.20/91,078.45 = 37,328.77/x
  3. Step 3: Cross multiply
    66,005.20x = 91,078.45 × 37,328.77
  4. Step 4: Simplify right side
    66,005.20x = 3,399,846,512.01
  5. Step 5: Solve for x
    x = 3,399,846,512.01/66,005.20
  6. Step 6: Final answer
    x = 51,508.77

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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.