Home / 80,931.30-121,405.77-31,053.75

Finding the Fourth Proportional to 80,931.30, 121,405.77 and 31,053.75

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Solution

The fourth proportional to 80,931.30, 121,405.77 and 31,053.75 is: 46,584.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,931.30 : 121,405.77 = 31,053.75 : x
  2. Step 2: Convert to fraction form
    80,931.30/121,405.77 = 31,053.75/x
  3. Step 3: Cross multiply
    80,931.30x = 121,405.77 × 31,053.75
  4. Step 4: Simplify right side
    80,931.30x = 3,770,104,430.14
  5. Step 5: Solve for x
    x = 3,770,104,430.14/80,931.30
  6. Step 6: Final answer
    x = 46,584.01

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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.