Home / 80,860.59-121,130.45-38,107.49

Finding the Fourth Proportional to 80,860.59, 121,130.45 and 38,107.49

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Solution

The fourth proportional to 80,860.59, 121,130.45 and 38,107.49 is: 57,085.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,860.59 : 121,130.45 = 38,107.49 : x
  2. Step 2: Convert to fraction form
    80,860.59/121,130.45 = 38,107.49/x
  3. Step 3: Cross multiply
    80,860.59x = 121,130.45 × 38,107.49
  4. Step 4: Simplify right side
    80,860.59x = 4,615,976,615.88
  5. Step 5: Solve for x
    x = 4,615,976,615.88/80,860.59
  6. Step 6: Final answer
    x = 57,085.62

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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.