Home / 81,156.26-111,995.40-45,346.30

Finding the Fourth Proportional to 81,156.26, 111,995.40 and 45,346.30

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Solution

The fourth proportional to 81,156.26, 111,995.40 and 45,346.30 is: 62,577.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,156.26 : 111,995.40 = 45,346.30 : x
  2. Step 2: Convert to fraction form
    81,156.26/111,995.40 = 45,346.30/x
  3. Step 3: Cross multiply
    81,156.26x = 111,995.40 × 45,346.30
  4. Step 4: Simplify right side
    81,156.26x = 5,078,576,220.31
  5. Step 5: Solve for x
    x = 5,078,576,220.31/81,156.26
  6. Step 6: Final answer
    x = 62,577.75

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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.