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Finding the Fourth Proportional to 81,148.94, 121,723.44 and 33,763.16

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Solution

The fourth proportional to 81,148.94, 121,723.44 and 33,763.16 is: 50,644.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,148.94 : 121,723.44 = 33,763.16 : x
  2. Step 2: Convert to fraction form
    81,148.94/121,723.44 = 33,763.16/x
  3. Step 3: Cross multiply
    81,148.94x = 121,723.44 × 33,763.16
  4. Step 4: Simplify right side
    81,148.94x = 4,109,767,980.47
  5. Step 5: Solve for x
    x = 4,109,767,980.47/81,148.94
  6. Step 6: Final answer
    x = 50,644.75

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1.5x scale

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.