Home / 81,985.32-122,995.26-26,577

Finding the Fourth Proportional to 81,985.32, 122,995.26 and 26,577

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Solution

The fourth proportional to 81,985.32, 122,995.26 and 26,577 is: 39,871.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,985.32 : 122,995.26 = 26,577 : x
  2. Step 2: Convert to fraction form
    81,985.32/122,995.26 = 26,577/x
  3. Step 3: Cross multiply
    81,985.32x = 122,995.26 × 26,577
  4. Step 4: Simplify right side
    81,985.32x = 3,268,845,025.02
  5. Step 5: Solve for x
    x = 3,268,845,025.02/81,985.32
  6. Step 6: Final answer
    x = 39,871.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.