Home / 80,849.48-121,329.70-28,259.02

Finding the Fourth Proportional to 80,849.48, 121,329.70 and 28,259.02

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Solution

The fourth proportional to 80,849.48, 121,329.70 and 28,259.02 is: 42,407.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,849.48 : 121,329.70 = 28,259.02 : x
  2. Step 2: Convert to fraction form
    80,849.48/121,329.70 = 28,259.02/x
  3. Step 3: Cross multiply
    80,849.48x = 121,329.70 × 28,259.02
  4. Step 4: Simplify right side
    80,849.48x = 3,428,658,418.89
  5. Step 5: Solve for x
    x = 3,428,658,418.89/80,849.48
  6. Step 6: Final answer
    x = 42,407.92

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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.