Home / 80,813.09-121,261.16-35,865.25

Finding the Fourth Proportional to 80,813.09, 121,261.16 and 35,865.25

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Solution

The fourth proportional to 80,813.09, 121,261.16 and 35,865.25 is: 53,816.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,813.09 : 121,261.16 = 35,865.25 : x
  2. Step 2: Convert to fraction form
    80,813.09/121,261.16 = 35,865.25/x
  3. Step 3: Cross multiply
    80,813.09x = 121,261.16 × 35,865.25
  4. Step 4: Simplify right side
    80,813.09x = 4,349,061,605.20
  5. Step 5: Solve for x
    x = 4,349,061,605.20/80,813.09
  6. Step 6: Final answer
    x = 53,816.30

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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.