Home / 80,739.04-121,135.75-35,754.25

Finding the Fourth Proportional to 80,739.04, 121,135.75 and 35,754.25

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Solution

The fourth proportional to 80,739.04, 121,135.75 and 35,754.25 is: 53,643.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,739.04 : 121,135.75 = 35,754.25 : x
  2. Step 2: Convert to fraction form
    80,739.04/121,135.75 = 35,754.25/x
  3. Step 3: Cross multiply
    80,739.04x = 121,135.75 × 35,754.25
  4. Step 4: Simplify right side
    80,739.04x = 4,331,117,506.91
  5. Step 5: Solve for x
    x = 4,331,117,506.91/80,739.04
  6. Step 6: Final answer
    x = 53,643.41

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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.