Home / 66,206.10-91,384.83-40,720.26

Finding the Fourth Proportional to 66,206.10, 91,384.83 and 40,720.26

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Solution

The fourth proportional to 66,206.10, 91,384.83 and 40,720.26 is: 56,206.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,206.10 : 91,384.83 = 40,720.26 : x
  2. Step 2: Convert to fraction form
    66,206.10/91,384.83 = 40,720.26/x
  3. Step 3: Cross multiply
    66,206.10x = 91,384.83 × 40,720.26
  4. Step 4: Simplify right side
    66,206.10x = 3,721,214,037.66
  5. Step 5: Solve for x
    x = 3,721,214,037.66/66,206.10
  6. Step 6: Final answer
    x = 56,206.51

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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.