Home / 80,040.96-120,133.80-42,632.28

Finding the Fourth Proportional to 80,040.96, 120,133.80 and 42,632.28

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Solution

The fourth proportional to 80,040.96, 120,133.80 and 42,632.28 is: 63,986.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,040.96 : 120,133.80 = 42,632.28 : x
  2. Step 2: Convert to fraction form
    80,040.96/120,133.80 = 42,632.28/x
  3. Step 3: Cross multiply
    80,040.96x = 120,133.80 × 42,632.28
  4. Step 4: Simplify right side
    80,040.96x = 5,121,577,799.06
  5. Step 5: Solve for x
    x = 5,121,577,799.06/80,040.96
  6. Step 6: Final answer
    x = 63,986.96

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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.