Home / 66,190.10-91,335.35-39,328.94

Finding the Fourth Proportional to 66,190.10, 91,335.35 and 39,328.94

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Solution

The fourth proportional to 66,190.10, 91,335.35 and 39,328.94 is: 54,269.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,190.10 : 91,335.35 = 39,328.94 : x
  2. Step 2: Convert to fraction form
    66,190.10/91,335.35 = 39,328.94/x
  3. Step 3: Cross multiply
    66,190.10x = 91,335.35 × 39,328.94
  4. Step 4: Simplify right side
    66,190.10x = 3,592,121,846.71
  5. Step 5: Solve for x
    x = 3,592,121,846.71/66,190.10
  6. Step 6: Final answer
    x = 54,269.78

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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.