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Finding the Fourth Proportional to 80,568.51, 120,852.81 and 30,637.08

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Solution

The fourth proportional to 80,568.51, 120,852.81 and 30,637.08 is: 45,955.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,568.51 : 120,852.81 = 30,637.08 : x
  2. Step 2: Convert to fraction form
    80,568.51/120,852.81 = 30,637.08/x
  3. Step 3: Cross multiply
    80,568.51x = 120,852.81 × 30,637.08
  4. Step 4: Simplify right side
    80,568.51x = 3,702,577,208.19
  5. Step 5: Solve for x
    x = 3,702,577,208.19/80,568.51
  6. Step 6: Final answer
    x = 45,955.64

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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.