Home / 84,144.64-126,184.12-31,525.44

Finding the Fourth Proportional to 84,144.64, 126,184.12 and 31,525.44

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Solution

The fourth proportional to 84,144.64, 126,184.12 and 31,525.44 is: 47,275.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,144.64 : 126,184.12 = 31,525.44 : x
  2. Step 2: Convert to fraction form
    84,144.64/126,184.12 = 31,525.44/x
  3. Step 3: Cross multiply
    84,144.64x = 126,184.12 × 31,525.44
  4. Step 4: Simplify right side
    84,144.64x = 3,978,009,904.01
  5. Step 5: Solve for x
    x = 3,978,009,904.01/84,144.64
  6. Step 6: Final answer
    x = 47,275.86

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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.