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Finding the Fourth Proportional to 81,726.80, 112,794.27 and 45,919.49

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Solution

The fourth proportional to 81,726.80, 112,794.27 and 45,919.49 is: 63,375.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,726.80 : 112,794.27 = 45,919.49 : x
  2. Step 2: Convert to fraction form
    81,726.80/112,794.27 = 45,919.49/x
  3. Step 3: Cross multiply
    81,726.80x = 112,794.27 × 45,919.49
  4. Step 4: Simplify right side
    81,726.80x = 5,179,455,353.32
  5. Step 5: Solve for x
    x = 5,179,455,353.32/81,726.80
  6. Step 6: Final answer
    x = 63,375.24

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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.